Arylindazoles and their use as herbicides

ABSTRACT

This invention relates to substituted aryl indazoles, a process for producing them and their use as herbicides. In particular this invention relates to substituted aryl indazoles of the formula ##STR1## wherein all variables are as defined in the specification.

This application is a continuation-in-part of application Ser. No. 848,622, filed Mar. 9, 1992, now abandoned.

BACKGROUND AND SUMMARY OF THE INVENTION

This invention relates to substituted aryl indazoles, a process for producing them and their use as herbicides. In particular this invention relates to substituted aryl indazoles of the formula ##STR2## wherein R¹ is hydrogen or halogen;

R² is hydrogen; nitro; halogen; alkyl; cyano; alkylthio; alkylsulfinyl; alkylsulfonyl; alkoxy; acetylamino; or amino;

R³ is hydrogen; halogen; haloalkyl; haloalkoxy; cyano; amino or SO_(y) R¹³ and R¹³ is alkyl or haloalkyl and y is 0, 1, or 2;

R⁴, R⁵ and R⁶ are independently hydrogen; halogen; nitro; amino; hydroxy; cyano; alkyl; alkoxyiminoalkyl; hydroxyalkyl; alkoxyalkyl; alkylsulfonylaminoalkyl; haloalkylsulfonylaminoalkyl; (alkyl)_(n) aminoalkyl; (alkylcarbonyloxy)_(z) alkyl; haloalkyl; formyl; alkylcarbonyl; carboxy and its salts; COOalkyl; carboxamido; substituted carboxamido wherein the nitrogen substituents can be selected from hydrogen, alkyl, haloalkylsulfonyl, and alkylsulfonyl; sulfonamido wherein the nitrogen substituents can be selected from hydrogen and alkyl; (alkylsulfonyl)_(z) amino; (acetyl)_(z) amino; ##STR3## wherein L, M, P and Q are as described below; YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is (R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR4## alkyl; haloalkyl; hydroxyalkyl; aralkyl; cyanoalkyl; acetoxyalkyl; alkoxyalkyl; alkenyl; or alkynyl;

R¹⁰ is alkyl; haloalkyl; hydrogen; hydroxy; alkoxy; alkoxyalkyl; alkoxyalkoxy; alkoxyalkylamino; dialkoxyalkylamino; aryloxy; aralkyl; alkoxycarbonyl; hydroxycarboxyl; alkoxycarbonylalkyl; hydroxycarbonylalkyl; (alkyl)_(n) amino; (alkyl)_(n) hydrazino; alkoxycarbonylalkylamino; hydroxyalkylamino; (alkyl)_(n) aminoalkylamino; (alkyl)_(n) aminocarbonylalkylamino; hydroxycarbonylalkylamino; alkylsulfonylamino; arylsulfonylamino; acetylaminoalkylamino; N-alkoxy-N-(alkyl)_(m) amino; N-hydroxy-N-(alkyl)_(m) amino; cyanoalkylamino; (alkenyl)_(n) amino; alkoxyalkylamino; (alkynyl)_(n) amino; alkenyloxy; alkynyloxy; semicarbazido; or a 5 or 6 membered heterocyclic ring comprised of CH, CH₂, N, O, or S;

R¹¹ is alkylene;

R¹² is hydrogen; alkyl; alkenyl; alkynyl or alkylcarbonyl;

M or Q is alkoxy; alkyl; (alkyl)_(n) amino; hydroxy; hydrogen; alkenyloxy; (alkenyl)_(n) amino; alkynyloxy; or (alkynyl)_(n) amino;

L is oxygen or sulfur;

P is phosphorus;

m is 0, 1;

n is 0, 1, 2;

z is 1, 2;

or R⁵ and R⁶ taken together with the carbon atom to which they are attached comprise an optionally substituted saturated or unsaturated heterocyclic ring having up to 6 members selected from carbon, nitrogen, oxygen and sulfur; wherein the substituents on the heterocyclic ring are defined as R⁹ above;

R⁷ is hydrogen; halogen; alkyl; or nitro;

R⁸ is hydrogen or halogen;

X is nitrogen or CR¹⁴ wherein R¹⁴ is hydrogen; halogen; haloalkyl; cyano; nitro; alkylthio; alkylsulfonyl; alkylsulfinyl; or alkoxy;

and agriculturally acceptable salts thereof.

DESCRIPTION OF THE INVENTION

Within the scope of the above formula certain embodiments are preferred as follows:

R¹ is hydrogen.

R² is hydrogen, halogen, alkyl or alkylthio and more preferably hydrogen and chloro.

R³ is halogen haloalkyl cyano, SO_(y) R¹³ or amino and more preferably chloro or trifluoromethyl.

R⁴ R⁵ and R⁶ are independently hydrogen cyano halogen, C₁ -C₃ alkyl, nitro, alkoxy, haloalkyl, carboxy and its salts, COOalkyl, carboxamido, substituted carboxamido, hydroxy, substituted sulfonamido, YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --S₂ R¹⁰ ; ##STR5## alkyl; haloalkyl; hydroxyalkyl; arylalkyl; cyanoalkyl; acetoxyalkyl; alkoxyalkyl; hydroxy; alkenyl; or alkynyl; and R¹⁰ is hydrogen, haloalkyl, alkoxyalkyl, hydroxy, alkyl, alkoxy, alkoxyalkylamino, alkoxy, dialkoxyalkylamino, alkoxycarbonyl, alkenyloxy, and semicarbazido.

R⁷ is hydrogen, methyl, chloro or fluoro and more preferably hydrogen.

R⁸ is hydrogen or chloro.

R¹¹ is --CH₂ --, --CH₂ CH₂ --, and --CH(CH₃)--.

X is N or CR¹⁴ wherein R¹⁴ is halogen, nitro, cyano and more preferably X is N or C-chloro.

In a preferred embodiment of the invention R³ is hydrogen halogen, SO_(y) R¹³ and haloalkyl; R⁴, R⁵ and R⁶ are independently hydrogen, halogen, alkyl, cyano, haloalkyl and YR⁹ ; R⁷ is hydrogen or halogen; R⁸ is hydrogen or halogen and X is N or C-halogen.

In another preferred embodiment of the invention R³ is hydrogen, halogen, SO_(y) R¹³ and haloalkyl, R⁴ is hydrogen, halogen, alkyl, cyano, haloalkyl and alkoxy; R⁵ is hydrogen; R⁶ is YR⁹ wherein Y is O or NR¹³ and X is N or C-halogen.

In another preferred embodiment of the invention R³ is hydrogen halogen, SO_(y) R¹³ and haloalkyl; R⁴ is hydrogen; and R⁵ is hydrogen, halogen, alkyl, cyano, haloalkyl, nitro and alkoxy; R⁶ is YR⁹ wherein Y is O or NR¹³ and X is N or C-halogen.

In another preferred embodiment R² is hydrogen or halogen; R³ is hydrogen halogen, SO_(y) R¹³ and haloalkyl; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is hydrogen, halogen, cyano, alkyl, alkoxyiminoalkyl, hydroxyalkyl, alkoxyalkyl, alkylsulfonylaminoalkyl, haloalkylsulfonylaminoalkyl, (alkyl)_(n) aminoalkyl, (alkylcarbonyloxy)_(z) alkyl, haloalkyl, formyl, alkylcarbonyl, carboxy and its salts, COOalkyl, carboxamido, substituted carboxamido wherein the nitrogen substituents can be selected from hydrogen, alkyl, haloalkylsulfonyl, and alkylsulfonyl, sulfonamido wherein the nitrogen substituents can be selected from hydrogen and alkyl, (alkylsulfonyl)_(z) amino, and (acetyl)_(z) amino and X is N or C-halogen.

In another embodiment R⁵ and R⁶ taken together with the carbon atom to which they are attached comprise an optionally substituted saturated or unsaturated heterocyclic ring having up to 6 members selected from C, N, O and S and X is N or C-halogen.

These embodiments are illustrative and are not meant to limit the invention in any manner.

The term "alkyl" and all groups containing alkyl portions, such as alkoxyalkyl, alkylcarbonyloxy, haloalkyl and the like, are intended to include straight-chain, branched-chain and cyclic groups. Examples are methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl and t-butyl. Each acyclic alkyl member may contain one to six carbon atoms. Similarly the terms alkenyl or alkynyl refer to unsaturated or branched-chains having from two to eight carbon atoms. Alkylidene members or components of members may contain one to four carbon atoms.

The term "aryl" shall mean phenyl and other heterocyclic ring compounds, preferably pyridyl,

Heterocyclic rings shall mean saturated or unsaturated rings containing at least one atom of N, O, S or P. Examples are pyridinyl, pyridazinyl, pyrimidyl, imidazolyl, furanyl, pyrrolyl, thienyl, triazolyl, oxazolyl and the like.

In the above definitions the term "halogen" includes fluoro, chloro, bromo and iodo groups. In polyhalogenated groups the halogens may be the same or different. The term "haloalkyl" refers to the alkyl group substituted by one or more halogen atoms.

Also included in the invention are the stereo and optical isomers of the compounds claimed and mixtures of these isomers in all proportions.

The compounds of the present invention, have been found to be active herbicides, possessing utility as pre-emergence and post-emergence herbicides and useful against a wide range of plant species including broadleaf and grassy species. The compounds are of particular interest when used in pre-emergence application. As mentioned hereinbelow, some of the compounds demonstrate selective control of plant species in certain crops, such as soybean, corn, rice and cotton.

This invention therefore also relates to a method for controlling undesirable vegetation comprising applying to a locus where control of such vegetation is desired, either prior or subsequent to the emergence of such vegetation, a herbicidally effective amount of a compound as described herein, together with an inert diluent or carrier suitable for use with herbicides.

The terms "herbicide" and "herbicidal" are used herein to denote the inhibitive control or modification of undesired plant growth. Inhibitive control and modification include all deviations from natural development such as, for example, total killing, growth retardation, defoliation, desiccation, regulation, stunting, tillering, stimulation, leaf burn and dwarfing. The term "herbicidally effective amount" is used to denote any amount which achieves such control or modification when applied to the undesired plants themselves or to the area in which these plants are growing. The term "plants"is intended to include germinated seeds, emerging seedlings and established vegetation, including both roots and above-ground portions. The term "agriculturally-acceptable salt" shall mean those that readily ionize in aqueous media and includes sodium, potassium, calcium, ammonium, magnesium salts and acid salts such as hydrochloride, sulfate and nitrate.

The compounds of this invention are prepared by the following procedures.

GENERAL METHOD OF PREPARATION

The unarylated indazole starting materials of the present invention can be prepared by the following two methods:

Method A: The conversion of ortho-methylanilines to indazoles by the standard diazotization-cyclization route known in the art and described in Organic Synthesis, Collective Volume III, page 660.

In general, the aniline in glacial acetic acid is diazotized by the addition of aqueous sodium nitrite or an organic nitrite such as isoamyl nitrite in an organic solvent. The cyclization occurs slowly upon standing for several days or within several hours at the reflux temperature of the organic solvent. This process is particularly effective when R₄ -R₇ is electron withdrawing.

Method B: Substituted cyclohexanones are allowed to react with amide acetal at elevated temperatures to yield 2-(substituted) aminomethylene ketones. The ketone is condensed with hydrazine hydrate in alcohol solvent under reflux to yield tetrahydroindazoles. The saturated ring is then aromatized by heating in decalin containing palladium-on-carbon as a dehydration catalyst. This process is particularly effective when R₄ -R₇ is an alkyl group.

The unarylated indazoles can be further modified and substituted by a variety of known standard organic reactions, for example nitration, as found in standard textbooks such as "Advanced Organic Chemistry", 4th edition by Jerry March, Copyright, 1992 by Wiley-Interscience.

The substituted indazole is arylated with the appropriate aryl halide to give a mixture of a target aryl indazole and a minor isomer. The isomer can be removed by various techniques including recrystallization and column chromatography. ##STR6##

The target indazoles can additionally be prepared from ortho-halobenzaldehydes by cyclocondensation with an appropriate aryl hydrazine. The hydrazone is prepared and isolated by heating in acetonitrile for a few minutes followed by cooling. The product is cyclized by heating in an inert solvent containing a base. Temperature control is important in the final step to avoid thermal ring opening. ##STR7##

The aryl hydrazines are prepared either by standard diazotization-reduction of a substituted aniline or by displacement of an aryl halide with hydrazine (Hy).

The substituents R⁴, R⁵ and/or R⁶ can be OH (which can be prepared from the methyl ether, or from the amino), SH (which can be prepared by displacing an appropriate halide or diazonium ion with mercaptide) and/or NH2 (which can be prepared by catalytically hydrogenating a nitro group). Where R⁴, R⁵, and/or R⁶ are OH, SH, and/or NH2, the parent N-1-arylindazoles can be prepared by two general procedures. In the first method the appropriate des aryl hydroxy-, mercapto-, or aminoindazole is allowed to react with the appropriately substituted acylation or alkylation reagent in the presence of a weak base such as potassium carbonate. This product is isolated and then arylated by the appropriate haloaryl intermediate in the presence of a base. This method is exemplified in the following scheme: ##STR8##

The second general method of preparation of this type of material is the reverse of the previous reaction. Here the aryl halide is allowed to react with the appropriately substituted indazole first followed by reaction of that intermediate with an alkylating or acylating reagent in the presence or of an appropriate base, or in the absence of base in the case of isocyanates and the like as follows: ##STR9##

The SH, OH, and NH2 groups on the indazole ring can be alkylated, acylated and sulfonated or otherwise allowed to react with aryl isocyanates, alkyl isocyanates, acyl isocyanates or sulfonyl isocyanates to give desired products or new intermediates.

These intermediates can be further modified, using conventional methods, to create new (reactive) intermediates. For example, the ester (compound 41) can be readily hydrolyzed to the acid (compound 55) and made into its acid chloride (e.g., oxalyl chloride/DMF). This acid chloride reacts with amines, hydrazines, semicarbazine, and alcohols to give new amides (e.g. compound 91), hydrazides (e.g. compound 133), semicarbazides (e.g. compound 140), and esters (e.g. compound 154). These and other conventional methods for modification of the substituents R⁴, R⁵ and/or R⁶ can be found in standard textbooks such as "Advanced Organic Chemistry", 4th edition, by Jerry March, Copyright, 1992 by Wiley-Interscience.

The following examples teach the syntheses of representative compounds of this invention. All structures are consistent with their ¹ H nuclear magnetic resonance (NMR), ¹³ C NMR, infrared red and mass spectra:

EXAMPLE 1 1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methoxy-5-nitro-1H-indazole (Compound 20 in Table I)

Preparation of the intermediate 6-methoxy-5-nitroindazole: 5-methoxy-2-methyl-4-nitroaniline (69 grams (g), 360 mmol) was mixed with 2.5 liters glacial acetic acid and stirred and cooled to about 15° C. in an ice water bath. After cooling the mixture, 25 g (360 mmol) sodium nitrite dissolved in 60 mL water was added in one portion. The resulting mixture was stirred and allowed to warm to room temperature. To allow time for complete cyclization of the diazonium salt, the solution was allowed to stand for 2 days at room temperature. The solvent was removed in vacuo at about 45° C., yielding a dark, tarry residue. The residue was purified by silica gel chromatography eluting with ethyl acetate in methylene chloride. Approximately 1 g of yellow crystals (m.p. 192°-194° C.) was obtained from 5 g of residue.

Preparation of 1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methoxy-5-nitro-1H-indazole: 3,5-dichloro-4-fluorobenzotrifluoride (1.2 g, 5 mmol, was mixed with a suspension of 1.0 g, (8 mmol) anhydrous, powdered potassium carbonate in 25 mL of anhydrous acetonitrile containing 0.05 g of 18-crown-6 catalyst and 6-methoxy-5-nitroindazole (0.9 g, 5 mmol) and heated under reflux for 3 hours. After cooling, the mixture was suction filtered and the filtrate was evaporated in vacuo. The residue was separated into two pure product components by silica gel chromatography eluting with ethyl acetate in hexane. The eluent yielded 1.0 g of the 1-arylindazole (Compound 20) and 0.2 g of the 2-arylindazole by product.

EXAMPLE 2 5-nitro-1-(2,4,6-trichlorophenyl)-1H-indazole (Compound 3 in Table I)

Preparation of the intermediate 2-chloro-5-nitrobenzaldehyde 2,4,6-trichlorophenylhydrazone: 2,4,6-trichlorophenylhydrazine (21.0 g, 100 mmol) was dissolved in 400 mL boiling acetonitrile. To this solution was added 2-chloro-5-nitrobenzaldehyde (18.6 g, 100 mmol) in 100 mL of boiling acetonitrile. The resulting mixture produced a bright yellow paste and was allowed to cool to room temperature. The solid was collected by suction-filtration, washed with 200 mL isopropanol followed by 200 mL hexane and then air dried. The process yielded 37.2 g of the desired intermediate hydrazone as a powdery solid.

Preparation of (Compound 3): 2-chloro-5-nitrobenzaldehyde 2,4,6-trichlorophenylhydrazone (1.5 g, 4 mmol) was dissolved in 25 mL anhydrous dimethylformamide containing 0.8 g (6 mmol) of anhydrous powdered potassium carbonate and 0.05 g of 18-crown-6 catalyst and stirred overnight in a heated oil bath (80°-90° C.) under a dry air atmosphere. The resulting solution was poured into 250 mL cold water and then saturated with salt to enable separation. The mixture was extracted with ethyl acetate, separated and dried with sodium sulfate. Evaporation in vacuo gave a purple oil which was purified by silica gel chromatography. The process yielded 1.2 g of a reddish crystalline solid, (93% yield) with a m.p. of 113°-116° C. as the desired product.

EXAMPLE 3 1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methoxy-1H-indazole (Compound 18 in Table I)

Preparation of the intermediate 6-methoxyindazole: 6-indazolol (4.8 g, 36 mmol) was dissolved in 25 mL of Dimethylformamide (DMF) and anhydrous potassium carbonate (9.95 g, 72 mmol) was added under nitrogen. Methyl iodide (5.6 g, 39 mmol) was added and after stirring for 1 hour at room temperature, the reaction mixture was poured into 350 mL of water. The resulting solid was combined with two extractions of the aqueous phase with ethyl acetate/diethyl ether (1:1). This crude product was dried, concentrated and chromatographed on silica gel (ether/methylene chloride). A pure sample of 2.51 g (47% yield) of the 6-methoxy was obtained.

Preparation of compound 18: 6-methoxyindazole (3.83 g, 26 mmol) was dissolved in 50 mL of DMF under nitrogen. To this solution was added 3,5-dichloro-4-fluorobenzotrifluoride (6.1 g, 26 mmol) and anhydrous potassium carbonate (7.2 g, 52 mmol). After stirring at room temperature for 2 hours and at 80°-95° C. for 2 hours, the cooled reaction mixture was poured into 500 mL of cold water. The aqueous phase was saturated with sodium chloride and extracted with ethyl acetate. The organic extract was washed with water, dried and concentrated to give 8.3 g of crude product purified by silica gel chromatography (ether/methylene chloride) to give 4.45 g of compound 18.

EXAMPLE 4 1-(3-chloro-5-trifluoromethyl-2-pyridyl)-6-indazolamine (Compound 22 in Table I)

Preparation of compound 22: A mixture of 6-indazolamine (2.7 g, 20 mmol), 2,3-dichloro-5-trifluoromethylpyridine (4.3 g, 20 mmol), and anhydrous potassium carbonate (5.5 g, 40 mmol) in 50 mL of DMF was heated at 80°-95° C. for 4.5 hours. Work up as in Example 3 above gave 2.76 g (44% yield) of compound 22 after silica gel chromatography (ether/methylene chloride).

EXAMPLE 5 1-(3-chloro-5-trifluoromethyl-2-pyridyl)-6-indazolol (Compound 100 in Table I)

Preparation of compound 100: Potassium t-butoxide (22.4 g, 200 mmol) was added to a stirred mixture of 6-indazolol (13.4 g, 100 mmol) in 100 mL of anhydrous DMF with cooling. To this was next added 2,3-dichloro-5-trifluoromethylpyridine (12.0 mL, 86 mmol) at 4°-7° C. over a period of 40 minutes. The reaction was stirred at room temperature for 2 hours and then diluted with 150 mL of diethyl ether and 200 mL of water. Crystals formed in the ether phase and were filtered off to give 11.0 g of what was identified as the 2-aryl minor isomer. The above aqueous phase was acidified with conc. hydrochloric acid and extracted with two 150 mL portions of ether. The extracts were dried over anhydrous magnesium sulfate to give an oily solid after evaporation of solvent. The residue was taken up in methylene chloride and the solution extracted with a 5% solution of sodium carbonate (twice with 100 mL portions). The carbonate extract was acidified as before and extracted with methylene chloride to give a solid after drying and evaporating as before. The solid was washed with hexane and filtered giving 3.7 g of compound 100.

EXAMPLE 6 ethyl R/S-2-[1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]propionate (Compound 41 in Table I)

Preparation of ethyl R/S-2-(1H-indazol-6-yloxy)propionate: ethyl 2-bromopropionate (5.5 mL, 42 mmol) was added to a stirred mixture of 6-indazolol (5.7 g, 42 mmol) and anhydrous potassium carbonate (5.8 g, 42 mmol) in 50 mL of anhydrous DMF at 10° C. The reaction was stirred for 6 hours at room temperature when a similar amount of anhydrous potassium carbonate was added and the mixture stirred for an additional 20 hours. The reaction mixture was diluted with 200 mL of ether and washed with 150 mL of water, a 5% solution of sodium carbonate (100 mL) and dried over anhydrous magnesium sulfate. The solution was filtered to remove drying agent and was evaporated in. vacuo to give 8.7 g of the desired ester intermediate as an oil.

Preparation of compound 41: The above ester (8.7 g, 37 mmol) was dissolved in 100 mL of anhydrous DMF and potassium t-butoxide (4.2 g, 37 mmol) was added in one portion with stirring and cooling, keeping the temperature under 15° C. Next, 3,5-dichloro-4-fluorobenzotrifluoride (8.6 g, 37 mmol) was added with cooling at 15° C. while a mild exotherm occurred during the addition. The reaction mixture was stirred at room temperature for 5 hours an was then diluted with 200 mL of ether, washed with 150 mL of water, 100 mL of 5% hydrochloric acid, and 75 mL of 5% sodium bicarbonate solution. The organic phase was dried over anhydrous magnesium sulfate and evaporated in vacuo. The residue was flash-chromatographed on Florisil with ether to give 12.7 g of an oil which crystallized from pentane. The yield of crystalline compound 41 was 11.6 g.

EXAMPLE 7 ethyl R/S-2-[ 1-(2-chloro-6-methylthio-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]propionate and ethyl R/S-2-[1-(2,6-bis-(dimethylthio)-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]propionate (Compounds 57 and 58 in Table I)

Preparation of compounds 57 and 58: a solution of ethyl R/S-2-[1-(2-chloro-6-fluoro-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]propionate (prepared in the same manner as Compound 41 above except using 3-chloro-4,5-difluorobenzotrifluoride) in anhydrous dimethylsulfoxide (DMSO) was treated with sodium methanethiolate (0.15 g, 2.1 mmol) at room temperature for 3 hours. Subsequently, additional sodium methanethiolate (0.15 g, 2.1 mmol) was added and stirring continued for 2 hours. The mixture was then partitioned between ether and water, the ether layer washed with brine, dried over magnesium sulfate, filtered and evaporated in vacuo. The residue was then purified by flash chromatography on silica gel (ether/hexane) to give 0.17 g of compound 57 followed by 0.13 g of compound 58.

EXAMPLE 8 5-bromo-1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methoxy-1H-indazole (Compound 181 in Table I)

Preparation of 1-bromo-2-methoxy-5-methyl-4-nitrobenzene: a mixture of 2-methoxy-5-methyl-4-nitroaniline (20 g, 110 mmol) in 140 mL of water was heated under reflux and 48% hydrobromic acid (56 mL) was added dropwise and the mixture was heated for 20 minutes. The resulting suspension was cooled to 0° C. and treated with 40 mL of aqueous sodium nitrite (7.6 g, 110 mmol) dropwise keeping the temperature at 0° C. The suspension was added carefully dropwise to a 0° C. solution of cuprous bromide (18.1 g, 126 mmol) in 96 mL of water and 38 mL of 48% HBr. The mixture was stirred at 0° C. for 30 minutes and at room temperature for 1 hour and finally on a steam bath for 20 minutes to complete the reaction. The solid precipitate was suction filtered and dissolved in methylene chloride, washed with 400 mL of 10% sodium hydroxide, 5% sodium bisulfite, and water. The organic layer was dried, filtered, and evaporated in vacuo to give 24.9 g of dark brown solid. This was recrystallized from hexane to give 13.4 g of bromo compound.

Preparation of 4-bromo-5-methoxy-2-methylaniline: a mixture of iron powder (2.4 g, 43 mmol), 9 mL of ethanol, 7 mL of water and 0.2 mL of conc. hydrochloric acid was heated to 80° C. and the previously prepared nitro compound (2 g, 8.1 mmol) was added portionwise to just maintain reflux after the heat source was removed. After the rapid reflux had subsided, the mixture was allowed to cool to about 70° C. and was filtered through Celite which was then washed with methylene chloride. The aqueous layer was separated and washed with methylene chloride and the combined organic layers were dried, filtered and evaporated in vacuo to give 1.55 g of brown solid. This was purified by flash chromatography on silica gel (methylene chloride) to give 1.18 g (67% yield) of the aniline as a white solid.

Preparation of 5-bromo-6-methoxy-1H-indazole: a solution of the above aniline (4.93 g, 23 mmol) in 50 mL of benzene was treated with sodium acetate (1.94 g, 24 mmol) and then acetic anhydride (6.98 g, 68 mmol). The mixture was heated to reflux while a white precipitate formed in the flask. Isoamyl nitrite (4.00 g, 34 mmol) in 10 mL of benzene was added dropwise to the hot solution over 20 minutes and the reddish mixture was heated overnight. After heating 20 hours, the reaction mixture was cooled and diluted with ether, washed with water, sodium bicarbonate, dried and filtered. The solvent was evaporated in vacuo to give 5.91 g of impure product. This was purified by flash chromatography on silica gel (methylene chloride) to give 3.75 g of an acetylated indazole intermediate. This was dissolved in ethanol (30 mL) containing 1 mL of conc. hydrochloric acid and the solution was heated under reflux for 4 hours. The solvent was then removed in vacuo and saturated aqueous sodium bicarbonate was added to the residue. The solid was filtered and dissolved in ethyl acetate/ether, dried, filtered and evaporated to give 3.10 g of the desired indazole intermediate.

Preparation of compound 181: a solution of the indazole (1.2 g, 5 mmol) and 3,5-dichloro-4-fluorobenzotrifluoride (1.15 g, 5 mmol) in 10 mL of anhydrous DMF containing anhydrous potassium carbonate (1.70 g, 12.3 mmol) was stirred at room temperature for 2 days. The mixture was poured into water and the precipitate was filtered off, dissolved in methylene chloride, dried, filtered and evaporated in vacuo. The solid residue weighed 1.96 g and was purified by silica gel chromatography (hexane/methylene chloride) to give 0.26 g of pure compound 181 and 1.45 g of impure product.

EXAMPLE 9 5-chloro-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-ol (Compound 253 in Table I)

Preparation of compound 253: a solution of 5-chloro-1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methoxy-1H-indazole (1.0 g, 3 mmol; prepared as for compound 181 in example 8 above) in 10 mL of anhydrous methylene chloride was chilled to -78° C. and boron tribromide (1.57 g, 6 mmol) was added and stirred for 1.5 hours at that low temperature. Subsequently, the solution was allowed to warm to room temperature and stir for 2 days. Additional boron tribromide (0.63 g, 2.5 mmol) was added and stirred at room temperature overnight and the mixture was cooled to -78° C. while 10 mL of methanol was added to quench the reaction. The volatile solvents and excess reagent were evaporated in vacuo and the residual solid washed with water and filtered. The solid was dissolved in ethyl acetate, dried, filtered and evaporated to give a crude product. This was purified by flash chromatography on silica gel to give, in addition to returned starting material, compound 253 (0.41 g, 43% yield).

EXAMPLE 10 6-acetoxymethyl-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazole (Compound 66 in Table I)

Preparation of 6-bromomethyl-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazole: 6-methyl-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazole (10 mmol) and N-bromosuccinimide (12 mmol) in 50 mL of carbon tetrachloride was heated under reflux and irradiated with a 275 watt sun lamp. After 4 hours, the reaction mixture was cooled, the succinimide was filtered off, and the solvent evaporated in vacuo to give 3.12 g of crude bromomethyl indazole.

Preparation of compound 66: the crude bromo derivative was added to potassium acetate (5 g) in 50 mL of acetic acid and the solution was heated on a steam bath for 2 hours. The mixture was poured onto ice and after the ice melted, the solid was filtered and dried to give a crude product. This was purified by silica gel chromatography (pentane/methylene chloride) to give 1.6 g of compound 66.

EXAMPLE 11 1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazole-6-carboxaldehyde and 6-bis-(acetoxy)methyl-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazole (Compounds 81 and 84 in Table I)

Preparation of compounds 81 and 84: 1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methyl-1H-indazole (6.4 g) was combined with a slight excess (2.2 equivalents) of N-bromosuccinimide in 50 mL of carbon tetrachloride. The mixture was heated under reflux and irradiated under a 275 watt sun lamp for 4 hours. The succinimide was removed by filtration and the solvent was evaporated in vacuo to give crude 6-dibromomethylindazole. This was added to potassium acetate (7.0 g) in 70 mL of acetic acid and the mixture was heated under reflux for 4 hours. The solution was poured onto ice and after the ice melted, the product was isolated by filtration. The crude product mixture was separated into its components by silica gel chromatography (pentane/ether/methylene chloride) to give 4.22 g of compound 81, 1.21 g of compound 66 and 0.81 g of compound 84.

EXAMPLE 12 methyl 3-[1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-yl]propenoate (Compound 85 in Table I)

Preparation of compound 85: methyl triphenylphosphoniumacetate bromide salt (1.98 g) was suspended in 20 mL of anhydrous tetrahydrofuran while an excess of 97% sodium hydride (0.12 g) was added. After stirring at room temperature for 1 hour, the aldehyde (1.12 g) Compound 81 was added followed by 3 drops of ethanol. The reaction mixture was stirred overnight and the solid precipitate was filtered off. The solvent was evaporated from the filtrate in vacuo to give crude product. This material was purified by silica gel chromatography (methylene chloride) to give 1.07 g of compound 85.

EXAMPLE 13 1-(2,6-dichloro-4-trifluoromethylphenyl)-N,N-diethyl-1H-indazol-6-amine (Compound 230 in Table I)

Preparation of compound 230: 6-indazolamine (1.0 g, 3 mmol) in 10 mL of anhydrous DMF containing potassium carbonate (0.83 g, 6 mmol) and ethyl iodide (1.8 g, 10 mmol) was heated to 60° C. overnight. Subsequently, additional ethyl iodide (1.8 g, 10 mmol) was added to the flask and heating was continued for another 8 hours. The solution was diluted with 200 mL of brine and extracted into two portions of 100 mL of ethyl acetate. The combined organic layers were dried by passage through a short silica gel pad and evaporated. The residue was purified by flash chromatography on silica gel (10% ethyl acetate/hexane) to give 1.5 g of compound 230 as a pale yellow solid.

EXAMPLE 14 N-[1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-yl]methanesulfonamide (Compound 40 in Table I)

Preparation of compound 40: 1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-amine (2 g, 5 mmol; compound 21) and triethyl amine (0.59 g, 5 mmol) were dissolved in methylene chloride. Distilled methanesulfonyl chloride (0.67 g, 5 mmol) was then added dropwise at room temperature and the solution was stirred for 15-20 minutes. A yellow solid precipitate was collected by suction filtration, dissolved in ethyl acetate and the solution dried by passing through a small silica gel pad. The solvent was evaporated and the residue was purified by silica gel chromatography (20% ethyl acetate/hexane) to give 0.96 g of compound 40.

EXAMPLE 15 1-(2,6-dichloro-4-trifluoromethylphenyl)-6-methylthio-1H-indazole (Compound 79 in Table I)

Preparation of 6-methylthio-1H-indazole: 6-indazolamine (4 g, 30 mmol) was dissolved in 30 mL cold water containing 5.4 mL of conc. sulfuric acid. Upon chilling in ice, the solution became a paste and a solution of sodium nitrite (2.2 g) in 10 mL of cold water was added to the paste portionwise with constant agitation. The temperature was maintained below about 4° C. by adjusting the rate of addition of the nitrite solution. The solid paste gradually dissolved giving a reddish-brown solution. This solution was added carefully portionwise to a stirred suspension of freshly prepared cuprous methylmercaptan (35 g) in 200 mL of water at 4° C. Immediately, gas evolution was evident and addition was regulated to prevent frothing out of the container. Subsequently, the tan suspension was stirred until gas evolution ceased. The solution was suction filtered and the tan solid was washed with water and dried to give 0.9 g of intermediate.

Preparation of compound 79: the 6-methylthio-1H-indazole (0.9 g, 6 mmol) above was dissolved in anhydrous DMF containing anhydrous potassium carbonate (1.52 g, 11 mmol) and 3,5-dichloro-4-fluorobenzotrifluoride (1.3 g, 6 mmol) and stirred overnight at 60° C. The mixture was poured into cold water and the product extracted into ethyl acetate, which was dried over sodium sulfate and evaporated to give an oily residue. This was separated into two components by silica gel chromatography (5% ethyl acetate/hexane) to give 1.1 g of compound 79 and 0.1 g of the 2-aryl isomer.

EXAMPLE 16 4-chloro-1-(2,6-dichloro-4-trifluoromethylphenyl)-5-methyl-1H-indazole (Compound 211 in Table I)

Preparation of 4-chloro-5-methyl-1H-indazole: the known 3-chloro-2,4-dimethylaniline (14.9 g, 96 mmol) in 250 mL of anhydrous benzene was treated with potassium acetate (9.4 g, 96 mmol) and acetic anhydride (29.4 g, 288 mmol). This mixture was slowly heated to reflux while a precipitate formed. Subsequently, isoamyl nitrite (17 g, 144 mmol) was added rapidly to the refluxing suspension and heating was continued for 18 hours. The cooled suspension was filtered and the solid rinsed with benzene. The combined filtrates were evaporated and the solid residue was dissolved in 200 mL of ethanol containing 1 mL of conc. hydrochloric acid. This mixture was heated under reflux for 5 hours and the solvent was removed in vacuo. The solid residue was washed with 5% sodium bicarbonate and dissolved in ethyl acetate, dried over sodium sulfate and evaporated to give 9.3 g of intermediate solid.

Preparation of compound 211: the intermediate above was arylated as in example 15 above to give 1.4 g of compound 211 and 0.23 g of the 2-aryl isomer.

EXAMPLE 17 diethyl 1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-5-ylphosphonate (Compound 161 in Table I)

Preparation of diethyl 1H-indazol-5-ylphosphonate: a mixture of triethyl amine (3.6 g, 36 mmol) and diethyl phosphite (5.0 g, 36 mmol) was treated with palladium tetrakis-triphenylphosphine (1.5 g, 13 mmol). To this mixture was added portionwise with stirring 1-acetyl-5-bromoindazole (8.0 g, 33 mmol). After about 4 g of the above indazole was added, 15 mL of toluene was added to dilute the reaction mixture followed by the remainder of the indazole. Subsequently, the reaction mixture was heated to 105° C. and heating continued for 5 hours. The mixture was cooled, diluted with diethyl ether and the precipitate filtered off. The filtrate was washed with water, dried, filtered and evaporated to give a dark brown solid weighing 11.8 g. This was purified by silica gel chromatography to give 5.82 g of intermediate 1-acetylphosphonate. This intermediate was mixed with 100 mL of 10% hydrochloric acid which was then heated on a steam bath for 30 minutes. The cooled mixture was extracted with chloroform which was then dried, filtered and evaporated to give an oily solid weighing 4.83 g of the desired intermediate.

Preparation of compound 161: the diethyl indazol-5-ylphosphonate above (1.0 g, 4 mmol) was arylated as in example 15 to give 1.74 g (94% yield) of compound 161.

EXAMPLE 18 1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-5-ylphosphonic acid (Compound 163 in Table I)

Preparation of compound 163: compound 161 (0.98 g, 2.1 mmol) in 10 mL of methylene chloride was chilled to 0° C. and trimethylsilyl bromide (1.6 g, 10.3 mmol) was added all at once. After stirring for 1.5 hours at 0° C. and overnight at room temperature, more trimethylsilyl bromide (0.3 g) was added and stirring was continued for 2 hours at room temperature. The excess reagent and solvent were evaporated in vacuo to give an orange oil which was triturated with water to give a white solid. The solid was collected by suction filtration and dissolved in 1N sodium hydroxide which was then washed with methylene chloride. The alkali layer was acidified with 1M phosphoric acid and the white solid precipitate was filtered and dissolved in chloroform/methanol, dried, filtered, and evaporated to give 0.78 g of compound 163.

EXAMPLE 19 methyl 1-(2,6-dichloro-4-trifluoromethylphenyl)-5-nitro-1H-indazol-6-ylcarboxylate (Compound 242 in Table I)

Preparation of methyl 5-acetylamino-4-methyl-2-nitrobenzoate: a mixture of fuming nitric acid (8.4 g) and conc. sulfuric acid (260 g) was cooled to 0°-10° C. and the known methyl 3-acetylamino-4-methylbenzoate (26.3 g, 127 mmol) was added portionwise with stirring. After stirring for several hours, the mixture was poured onto ice which subsequently melted. The product was collected by suction filtration, washed with water and dried. The solid was recrystallized from isopropanol to give 27 g of yellow powder.

Preparation of methyl 5-nitro-1H-indazol-6-ylcarboxylate: the cyclization of the above intermediate toluidide followed the procedure in example 16 above to give 4.9 g of the desired ester intermediate as an orange solid.

Preparation of compound 242: the arylation of the intermediate indazole above followed the procedure in example 16 above to give from 1.5 g of starting indazole, 1.8 g of compound 242.

EXAMPLE 20 1-(2,6-dinitro-4-trifluoromethylphenyl)-5-nitro-1H-indazole (Compound 108 in Table I)

Preparation of compound 108: a solution of 5-nitroindazole (2.0 g, 10 mmol) in 40 mL of anhydrous DMF was treated with 4-chloro-3,5-dinitrobenzotrifluoride (3.32 g, 10 mmol) and anhydrous potassium carbonate (1.7 g, 10 mmol). To this mixture was added a few crystals of 18-crown-6 catalyst and the solution heated to 40° C. for 4 hours. The mixture was cooled, diluted with methylene chloride, washed with water, 1N hydrochloric acid, aqueous potassium carbonate, aqueous sodium hydroxide, then dried over magnesium sulfate. Evaporation and trituration of the residue with ether gave 2.75 g (57% yield) of a yellow solid.

EXAMPLE 21 ethyl 3-[1-(3-chloro-5-trifluoromethyl-2-pyridyl)-1H-indazol-6-ylamino]-3-oxopropionate (Compound 52 in Table I)

Preparation of compound 52: the intermediate aminoindazole prepared as in example 4 (3.2 g, 10 mmol) was dissolved in 50 mL of methylene chloride containing 1 mL of pyridine. To this was added ethyl malonyl chloride (1.40 mL, 11 mmol) with cooling. The reaction was exothermic and allowed to stand for one hour and then washed with 5% hydrochloric acid (50 mL), 5% sodium bicarbonate solution (50 mL), and dried over anhydrous magnesium sulfate. The dried solution was evaporated in vacuo to give 4.0 g of an oil which crystallized on standing from ether-pentane to give 2.7 g of a first crop of white solid of compound 52.

EXAMPLE 22 6-(2-acetoxyethoxy)-1-(3-chloro-5-trifluoromethyl-2-pyridyl)-1H-indazole (Compound 209 in Table I)

Preparation of 6-(2-acetoxyethoxy)-1H-indazole: a mixture was prepared of 6-Hydroxyindazole (13.4 g, 100 mmol), dimethyl formamide (100 mL), activated anhydrous potassium carbonate (13.8 g, 100 mmol), and 18-crown-6 (10 mg.). To this mixture was added 2-Bromoethyl acetate (11.0 mL, 100 mmol) dropwise with stirring at 5° C. under a nitrogen atmosphere. The reaction was stirred overnight and then diluted with 300 mL of ether and washed with water (150 mL), 5% sodium bicarbonate solution (twice with 100 mL portions), 5% sodium carbonate solution (100 mL); and dried over anhydrous magnesium sulfate. This dried solution was evaporated under high vacuum to give 3.2 g of an oil of 6-Acetoxyethoxyindazole.

Preparation of compound 209: the above intermediate product (3.2 g, 15 mmol) was dissolved in 50 mL of DMF and to this was added potassium t-butoxide (1.63 g, 15 mmol). To this was added in one portion, 2,3-Dichloro-5-trifluoromethylpyridine (2.1 mL, 15 mmol) at 5° C. with ice bath cooling. The temperature of the reaction was allowed to rise to room temperature and stand for one hour. The reaction was diluted with ether (150 mL) and washed with water (100 mL), 5% sodium bicarbonate solution (twice with 100 mL portions); and dried over anhydrous magnesium sulfate to yield after evaporation in vacuo 4.15 g of an oil of the desired product (Compound 209).

EXAMPLE 23 1-(3-chloro-5-trifluoromethyl-2-pyridyl)-6-(2-hydroxyethoxy)-1H-indazole (Compound 210 in Table I)

Preparation of compound 210: Compound 209 of Table 1 (3.02 g, 7.6 mmol) was mixed with ethanol (10 mL), water (1.0 mL), and 85% potassium hydroxide pellets (0.55 g, 8.3 mmol). The reaction mixture was stirred at room temperature for 20 hours and then evaporated in vacuo to give an oil which was taken up in methylene chloride (100 mL) and washed with water and dried over anhydrous magnesium sulfate and evaporated as before to give 2.14 g of an oil which crystallized from ether-hexane to yield 0.78 g of solid of the desired product (Compound 210).

EXAMPLE 24 R/S 2-[1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]propionic acid (Compound 55 in Table I)

Preparation of compound 55: compound 41 of Table 1 (4.5 g, 10 mmol) was mixed with methanol (100 mL), water (10 mL), and 85% potassium hydroxide pellets (0.73 g, 11 mmol). This mixture was stirred over the week end and then evaporated in vacuo to a glass which was taken up in water (100 mL) and washed with ether (80 mL) and acidified with conc. hydrochloric acid (0.91 mL). This acidified mixture was extracted with methylene chloride (twice with 75 mL portions) and the combined extracts dried over anhydrous magnesium sulfate with florisil. This dried extract was evaporated in vacuo to give a glass which was crystallized from ether-hexane to give a first fraction of 2.7 g of the desired product.

EXAMPLE 25 ethyl 2-[1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-indazol-6-yloxy]-propionylaminoacetate (Compound 153 in Table I)

Preparation of compound 153: compound 55 of Table 1 (1.2 g, 3 mmol) was suspended in methylene chloride (10 mL) and to this was added carbonyl-di-imidazole (0.65 g, 4 mmol) in one portion with gas evolution. After 45 minutes a mixture of glycine ethyl ester hydrochloride (1.4 g, 10 mmol), methylene chloride (20 mL), and triethyl amine (1.4 mL, 10 mmol) was quickly prepared and added to the imidazole reaction in one portion. The reaction was slightly exothermic and after 15 minutes was diluted with ether (150 mL) and washed with water (100 mL), 5% sodium bicarbonate (twice with 75 mL portions); and dried over anhydrous magnesium sulfate, to give a glass on evaporation in vacuo. This crystalized from ether-hexane to yield 1.25 g of solid of the desired product.

EXAMPLE 26 ethyl R-2-[1-(3-chloro-5-trifluoromethyl-2-pyridyl)-1H-indazol-6-yloxy]propionate (Compound 255 in Table I)

Preparation of ethyl R-2-(1H-indazol-6-yloxy]propionate: a mixture consisting of 6-hydroxyindazole (6.7 g, 50 mmol), anhydrous DMF (100 mL), ethyl S-2-(methylsulfonyl)-oxy-propionate, 90% (9.0 mL, 50 mmol), and anhydrous activated potassium carbonate (6.9 g, 50 mmol). The reaction was heated to 80°-90° C. with stirring under an atmosphere of nitrogen for 90 minutes and cooled to room temperature and allowed to stand over the weekend. The reaction was diluted with ether (200 mL) and then washed with water (a 400 mL portion followed by a 100 mL portion), saturated sodium bicarbonate solution (100 mL), and water (100 mL); and then dried over magnesium sulfate followed by flash chromatography on florisil with ether to give 6.3 g of an oil identified as Ethyl R-2-(1H-indazol-6-yloxy)-propionate by its nuclear magnetic resonanance (NMR), infrared spectra, optical rotation, and mass spectroscopy determinations.

Preparation of compound 255: a mixture was prepared containing the above indazole compound (2.3 g, 10 mmol), 50 mL anhydrous DMF, and anhydrous activated potassium carbonate (1.1 g, 10 mmol). To this was added 2,3-dichloro-5-trifluoromethypyridine (1.4 mL, 10 mmol) cooled by an ice bath. It was stirred at ice bath temperature for one hour and at room temperature for one hour and then diluted with ether (200 mL). The mixture was washed with water (three times with 100 mL portions), dried over anhydrous magnesium sulfate and evaporated under high vacuum to yield 2.8 g of an oil identified as the desired product by its nuclear magnetic resonanance (NMR), infrared spectrum, optical rotation, and mass spectroscopy determinations.

The following Table I depicts representative compounds of this invention.

    TABLE I        Compound          Physical Constant No. R.sup.1 R.sup.2 R.sup.3      R.sup.4 R.sup.5 R.sup.6 R.sup.7 R.sup.8 X M.P. °C. or n.sub.D.sup.      3°        1 H Cl Cl H NO.sub.2 Cl H H CCl 61.0-62.0 2 H Cl CF.sub.3 H NO.sub.2 H      H H CCl 102.0-104.0 3 H Cl Cl H NO.sub.2 H H H CCl 113.0-116.0 4 H H Cl      H NO.sub.2 H H Cl CCl 145.0-148.0 5 H H Cl H NO.sub.2 Cl H Cl CCl      166.0-168.0 6 H Cl CF.sub.3 H NO.sub.2 NO.sub.2 H H CCl 141.0-142.0 7 H      Cl CF.sub.3 H NO.sub.2 H H H (N) 131.0-133.0 8 H Cl CF.sub.3 H H H H H      CCl -- 9 H Cl CF.sub.3 H H H H H (N) 60.0-65.0 10 H H Cl H H H H Cl CCl      -- 11 H H Cl H NO.sub.2 H H H CCl 80.0-81.0 12 H Cl CF.sub.3 NO.sub.2 H      H H H CCl -- 13 Cl Cl CF.sub.3 H H H H H CCl -- 14 Cl Cl CF.sub.3 H      NO.sub.2 H H H CCl 93.0-98.0 15 H Cl CF.sub.3 NO.sub.2 H H B H CCl      100.0-101.0 16 H Cl CF.sub.3 H H NO.sub.2 H H CCl 126.0-127.0 17 H Cl      CF.sub.3 H NO.sub.2 Cl H H CCl 162.0-164.0 18 H Cl CF.sub.3 H H OCH.sub.3       H H CCl 93.0-94.0 19 H H CF.sub.3 H NO.sub.2 H H H CCl 149.0-151.0 20 H      Cl CF.sub.3 H NO.sub.2 OCH.sub.3 H H CCl 215.0-216.0 21 H Cl CF.sub.3 H      H NH.sub.2 H H CCl 61.0-63.0 22 H Cl CF.sub.3 H H NH.sub.2 H H (N)      222.0-223.0 23 H Cl CF.sub.3 H NH.sub.2 H H H (N) 143.0-144.0 24 H Cl      CF.sub.3 H NH.sub.2 H H H CCl 126.0-127.0 25 H H CF.sub.3 H NO.sub.2 H H      H (N) 112.0-113.0 26 H H CF.sub.3 H H NO.sub.2 H H (N) 142.0-144.0 27 H      H CF.sub.3 H H H H H (N) 86.0-87.0 28 H Cl CF.sub.3 H NO.sub.2 NO.sub.2      H H (N) 154.0-155.0 29 H H CF.sub.3 H H NHCOCH.sub.3 H H CCl 183.0-184.0      30 H H CF.sub.3 H H NH.sub.2 H H CCl 199.0-200.0 31 H Cl CF.sub.3 H H H      NO.sub.2 H (N) 143.0-144.0 32 H Cl CF.sub.3 H H H NO.sub.2 H CCl      225.0-227.0 33 H Cl CF.sub.3 H H CH.sub.3 H H (N) 58.0-60.0 34 H Cl      CF.sub.3 CH.sub.3 H H H H (N) 41.0-45.0 35 H Cl CF.sub.3 H H H CH.sub.3      H (N) 91.0-92.0 36 H Cl CF.sub.3 CH.sub.3 H H H H CCl 89.0-91.0 37 H Cl      CF.sub.3 H H CH.sub.3 H H CCl 90.0-92.0 38 H Cl CF.sub.3 H H H CH.sub.3      H CCl 135.0-137.0 39 H NO.sub.2 CF.sub.3 H H NH.sub.2 H H CCl 183.0-185.0       40 H Cl CF.sub.3 H H NHSO.sub.2 CH.sub.3 H H CCl 170.0-172.0   41 H Cl      CF.sub.3 H H       ##STR10##       H H CCl 67.0-71.0   42 H F CF.sub.3 H NO.sub.2 H H H CCl 143.0-144.0      43 H Cl CF.sub.3 H H       ##STR11##       H H (N) 81.0-82.0   44 H Cl CF.sub.3 H H OCH.sub.2       CH H H CCl 130.0-131.0        45 H F CF.sub.3 H H      ##STR12##       H H CCl --   46 H Cl CF.sub.3 H F H H H CCl 71.0-72.0 47 H Cl CF.sub.3      Cl H H H H CCl 110.0-112.0 48 H Cl CF.sub.3 Cl H H H H (N) 69.0-72.0      49 H Cl CF.sub.3       ##STR13##       H H H H CCl 87.0-89.0   50 H Cl CF.sub.3 H Br H H H (N) --   51 H Cl      CF.sub.3 H H       ##STR14##       H H (N) 125.0-127.0        52 H Cl CF.sub.3 H H      ##STR15##       H H (N) 112.0-115.0        53 H Cl CF.sub.3 H H      ##STR16##       H H CCl 90.0-92.0        54 H Cl CF.sub.3 H H      ##STR17##       H H CCl 163.0-164.0        55 H Cl CF.sub.3 H H      ##STR18##       H H CCl 180.0-181.0   56 H H H H NO.sub.2 H H Cl (N) --        57 H SCH.sub.3 CF.sub.3 H H       ##STR19##       H H CCl 123.0-124.0        58 H SCH.sub.3 CF.sub.3 H H      ##STR20##       H H CCH.sub.3 108.0-110.0   59 H Cl CF.sub.3 H H NHSO.sub.2 CF.sub.3 H      H (N) 206.0-207.0        60 H Cl CF.sub.3 H H      ##STR21##       H H (N) 207.0-208.0        61 H Cl CF.sub.3 H H      ##STR22##       H H (N) 238.0-240.0        62 H Cl CF.sub.3 H H      ##STR23##       H H (N) 185.0-195.0        63 H Cl CF.sub.3 H H      ##STR24##       H H (N) 168.0-170.0        64 H Cl CF.sub.3 H H      ##STR25##       H H (N) 111.0-114.0        65 H Cl CF.sub.3 H H      ##STR26##       H H (N) 164.0-166.0        66 H Cl GF 3 H H      ##STR27##       H H CCl 101.0-102.0   67 H Cl CF.sub.3 H CN H H H (N) 92.0-93.0   68 H      Cl CF.sub.3 H H       ##STR28##       H H (N) 150.0-151.0        69 H Cl CF.sub.3 H H      ##STR29##       H H CCl 145.0-146.0        70 H Cl CF.sub.3 H H      ##STR30##       H H CCl 165.0 (dec.)        71 H Cl CF.sub.3 H H      ##STR31##       H H CCl 169.0-171.0   72 H Cl CF.sub.3 H H NHSO.sub.2 CF.sub.3 H H CCl      190.0-194.0 73 H Cl CF.sub.3 H CN H H H CCl 88.0-90.0 74 H Cl CF.sub.3 H      CH.sub.3 H H H CCl -- 75 H Cl CF.sub.3 H CH.sub.3 H H H (N) 108.0-111.0      76 H F CF.sub.3 H CH.sub.3 H H H CCl --        77 H Cl CF.sub.3 H H      ##STR32##       H H CCl 108.0-110.0   78 H Cl CF.sub.3 H H Cl H H CCl 86.0-88.0 79 H Cl      CF.sub.3 H H SCH.sub.3 H H CCl 92.0-94.0 80 H Cl CF.sub.3 H H SO.sub.2      N(CH.sub.3).sub.2 H H CCl 165.0-167.0 81 H Cl CF.sub.3 H H CHO H H CCl      110.0-111.0 82 H H NO.sub.2 H NO.sub.2 H H H (N) -- 83 H NO.sub.2      NO.sub.2 H NO.sub.2 H H H (N) --        84 H Cl CF.sub.3 H H      ##STR33##       H H CCl 144.0-146.0        85 R Cl CF.sub.3 H H      ##STR34##       H H CCl 136.0-137.0   86 H Cl CF.sub.3 H H COH H H CCl 198.0-200.0       O 87 H Cl CF.sub.3 H H CHNOCH.sub.3 H H CCl 109.0-111.0 88 H Cl      CF.sub.3 H H CH.sub.2 OH H H CCl 111.0-112.0   89 H Cl CF.sub.3 H H       ##STR35##       H H CCl 101.0-108.0        90 H Cl CF.sub.3 H H      ##STR36##       H H CCl 170.0-172.0        91 H Cl CF.sub.3 H H      ##STR37##       H H CCl 178.0-179.0   92 H Cl CF.sub.3 H Cl H H H CCl 83.0-89.0 93 H Cl      CF.sub.3 H Cl H H H (N) 130.0-132.0 94 H F CF.sub.3 H Cl H H H CCl      75.0-76.0 95 H Cl CF.sub.3 H CH.sub.3 CH.sub.3 H H (N) 101.0-102.0 96 H      Cl CF H CH.sub.3 CH.sub.3 H H CCl 123.0-124.0 97 H Cl CF.sub.3 H H      OCH.sub.2 CHCH.sub.2 H H (N) -- 98 H Cl CF.sub.3 H H NHSO.sub.2 CH.sub.2      COOCH.sub.3 H H (N) 56.0 (dec.) 99 H Cl CF.sub.3 H H NHSO.sub.2 CH.sub.2      CO.sub.2       H H H (N) 74.0-81.0 100 H Cl CF.sub.3 H H OH H H (N) 153.0-155.0 101 H      Cl CF.sub.3 H H I H H CCl 112.0-114.0 102 H Cl CF.sub.3 H H CH.sub.2      NH.sub.2 H H CCl -- 103 H Cl CF.sub.3 H H CH.sub.2 NHSO.sub.2 CF.sub.3 H      H CCl 144.0-147.0 104 H Cl CF.sub.3 H H OCH.sub.2 OC.sub.2 H.sub.5H H      (N) --        105 H NO.sub.2 CF.sub.3 H H      ##STR38##       H H CCl 85.0-88.0        106 H Cl CF.sub.3 H H      ##STR39##       H H CCl 188.0-190.0   107 H NO.sub.2 CF.sub.3 H NO.sub.2 H H Cl CH --      108 H NO.sub.2 CF.sub.3 H NO.sub.2 H H H CNO.sub.2 -- 109 H NO.sub.2 CN      H NO.sub.2 H H H CNO.sub.2 -- 110 H Cl CF.sub.3 H Cl NO.sub.2 H H (N)      158.0-160.0 111 H Cl CF.sub.3 H H CH.sub.2 OCH.sub.3 H H CCl 65.0-66.0      112 H Cl NH.sub.2 H H       ##STR40##       H H CCl --   113 H H CF.sub.3 H NO.sub.2 H H H CNO.sub.2 --   114 H Cl      CF.sub.3 H H       ##STR41##       H H CCl 282.0-283.0        115 H Cl CF.sub.3      ##STR42##       H H H H CCl --   116 I Cl CF.sub.3 H H I H H CCl 90.0-92.0 117 H Cl      CF.sub.3 H H F H H CCl 78.0-80.0        118 H Cl CF.sub.3 H      ##STR43##       H H H CCl 245.0-247.0   119 H Cl CF.sub.3 Br H H H H (N) 84.0-85.0 120      H Cl CF.sub.3 Br H H H H CCl 112.0-113.0 121 H NO.sub.2 CF.sub.3 Br H H      H H CCl 135.0-136.0 122 H H CF.sub.3 H NO.sub.2 H H H CCN -- 123 H Cl      CF.sub.3 H H F H H (N) 54.0-55.0        124 H Cl CF.sub.3 H H      ##STR44##       H H CCl 136.0-137.0   125 H Cl CF.sub.3 H H Br H H CCl 65.0-67.0 126 H      Cl CF.sub.3 H H Br H H (N) 93.0-94.0        127 H Cl CF.sub.3 H      ##STR45##       H H H CCl --   128 H Cl CF.sub.3 CN H H H H (N) 120.0-121.0 129 H Cl      CF.sub.3 CN H H H H CCl 144.50        130 H Cl CF.sub.3 H H      ##STR46##       H H CNHAc 94.0-98.0   131 H Cl CF.sub.3 H H NHCOCH.sub.3 H H (N)      115.0-118.0        132 H Cl CF.sub.3 H H      ##STR47##       H H (N) 150.0 (dec.)        133 H Cl CF.sub.3 H H      ##STR48##       H H CCl 140.0-142.0                   134 H Cl CF.sub.3 H H       ##STR49##       H H CCl 141.0-142.0        135 H Cl CF.sub.3 H H      ##STR50##       H H CCl --        136 H Cl CF.sub.3 H H      ##STR51##       H H CCl 105.0-107.0        137 H Cl CF.sub.3 H H      ##STR52##       H H CCl 174.0-175.0        138 H Cl CF.sub.3 H H      ##STR53##       H H CCl120.0-122.0        139 H Cl CF.sub.3 H H      ##STR54##       H H CCl 162.0-165.0        140 H Cl CF.sub.3 H H      ##STR55##       H H CCl 202.0-204.0        141 H Cl CF.sub.3 H H      ##STR56##       H H CCl 157.0-159.0   142 H F CF.sub.3 H H OCH.sub.2 CCH H H CCl      43.0-45.0 143 H F CF.sub.3 H H Br H H CCl 57.0-59.0 144 H Cl CF.sub. 3 H      NHSO.sub.2 CH.sub.3 H H H CCl 180.0-181.0 145 H Cl CF.sub.3 NHCOCH.sub.3      H H H H CCl -- 146 H Cl CF.sub.3 H NO.sub.2 H H H (N) -- 147 H Cl      CF.sub.3 H PO(OC.sub.2 H.sub.5).sub.2 H H H (N) -- 148 H Cl CF.sub.3      NHSO.sub.2       CH.sub.3 H H H H CCl 193.0-196.0 149 H Cl CF.sub.3 N(COCH.sub.3).sub.2      H H H H CCl 151.0-153.0        150 H NH.sub.2 CF.sub.3 H H      ##STR57##       H H CCl 153.0-155.0        151 H Cl CF.sub.3 H H      ##STR58##       H H CCl 149.0-151.0        152 H Cl CF.sub.3 H H      ##STR59##       H H CCl135.0-140.0        153 H Cl CF.sub.3 H H      ##STR60##       H H CCl 95.0-110.0        154 H Cl CF.sub.3 H H      ##STR61##       H H CCl 66.0-68.0        155 H Cl CF.sub.3 H H      ##STR62##       H H CCl 182.0-184.0        156 H Cl CF.sub.3 H H      ##STR63##       H H CCl159.0-161.0        157 H Cl CF.sub.3 H H      ##STR64##       H H CCl75.0-76.0   158 H Cl CF.sub.3 H CO.sub.2 C.sub.2 H.sub.5 H H H      CCl104.0-105.0 159 H Cl CF.sub.3 H CO.sub.2 H H H H CCl202.0-205.0 160 H      Cl CF.sub.3 H H OCH.sub.2 CCH H H (N) 75.0-76.0 161 H Cl CF.sub.3 H      PO(OC.sub.2 H.sub.5).sub.2 H H H CCl -- 162 H Cl CF.sub.3 H NO.sub.2      OCH.sub.3 H H (N) 158.0-162.0 163 H Cl CF.sub.3 H PO(OH).sub.2 H H H CCl      187.0-192.0        164 H Cl CF.sub.3 HH      ##STR65##       H H CCl 88.0-89.0        165 H Cl CF.sub.3 H H      ##STR66##       H H CCl 97.0-102.0        166 H Cl CF.sub.3 H H      ##STR67##       H H CCl 90.0-91.0   167 H Cl CF.sub.3 H H OCH.sub.3 H H (N) 58.0-60.0      168 H Cl CF.sub.3       ##STR68##       H H H H CCl 82.0-85.0        169 H Cl CF.sub.3      ##STR69##       H H H H (N) 70.0-72.0   170 H Cl CF.sub.3 CO.sub.2 H H H H H (N)      240.0-243.0        171 H Cl CF.sub.3 H H      ##STR70##       H H (N) 134.0-136.0        172 H Cl CF.sub.3 H H      ##STR71##       H H CCl --        173 H Cl CF.sub.3 H H      ##STR72##       H H CCl 125.0-126.0        174 H Cl CF.sub.3 H H      ##STR73##       H H CCl 147.0-149.0        175 H Cl CF.sub.3 H H      ##STR74##       H H CCl 138.0-139.0        176 H Cl CF.sub.3 H H      ##STR75##       H H (N) 180.0-181.0        177 H Cl CF.sub.3 H H      ##STR76##       H H (N) 133.0-134.0        178 H Cl CF.sub.3 H H      ##STR77##       H H (N) 114.0-116.0        179 H Cl CF.sub.3 H H      ##STR78##       H H (N) --        180 H Cl CF.sub.3 H H      ##STR79##       H H (N) 187.0-188.0        181 H Cl CF.sub.3 H Br OCH.sub.3 H H CCl 183.0-184.0   182 H Cl      CF.sub.3 H H       ##STR80##       H H (N) 150.0-151.0        183 H Cl CF.sub.3 H H      ##STR81##       H H (N) 108.0-109.0   184 H Cl CF.sub.3 CO.sub.2       H H H H H CCl 213.0-215.0        185 H Cl CF.sub.3 H H      ##STR82##       H H (N) 82.0-83.0        186 H Cl CF.sub.3 H H      ##STR83##       H H (N) 151.0-152.0        187 H Cl CF.sub.3 H H      ##STR84##       H H (N) 132.0-133.0        188 H Cl CF.sub.3 H H      ##STR85##       H H (N) --        189 H Cl CF.sub.3 H H      ##STR86##       H H (N) 54.0-56.0        190 H Cl CF.sub.3 H H      ##STR87##       H H (N) 170.0-175.0        191 H Cl CF.sub.3 H H      ##STR88##       H H (N) 96.0-98.0        192 H Cl CF.sub.3 H H      ##STR89##       H H (N) 139.0-143.0        193 H Cl CF.sub.3 H H      ##STR90##       H H (N) 123.0-127.0        194 H Cl CF.sub.3 H H      ##STR91##       H H (N) 157.0-160.0        195 H Cl CF.sub.3 H H      ##STR92##       H H (N) 220.0-222.0        196 H Cl CF.sub.3 H H      ##STR93##       H H (N) 155.0-156.0        197 H Cl CF.sub.3 H H      ##STR94##       H H (N) 105.0-109.9        198 H Cl CF.sub.3 H H      ##STR95##       H H (N) 115.0-118.0        199 H Cl CF.sub.3 H H      ##STR96##       H H (N) 130.0-131.0        200 H Cl CF.sub.3 H H      ##STR97##       H H (N) 192.0-195.0        201 H Cl CF.sub.3 H H      ##STR98##       H H (N) 101.0-103.0        202 H Cl CF.sub.3 H H      ##STR99##       H H (N) 151.0-152.0        203 H Cl CF.sub.3 H H      ##STR100##       H H (N) 123.0-126.0   204 H Cl CF.sub.3 CF.sub.3 H H H H CCl 88.0-90.0      205 H Cl CF.sub.3 CF.sub.3 H H H H (N) 67.0-69.0   206 H Cl CF.sub.3 H H       ##STR101##       H H (N) 75.0-80.0        207 H Cl CF.sub.3 H H      ##STR102##       H H (N) 210.0 (dec.)        208 H Cl CF.sub.3 H H      ##STR103##       H H (N) --        209 H Cl CF.sub.3 H H      ##STR104##       H H (N) --   210 H Cl CF.sub.3 H H OCH.sub.2 CH.sub.2 OH H H (N)      115.0-123.0 211 H Cl CF.sub.3 Cl CH.sub.3 H H H CCl 86.0-88.0 212 H Cl      CF.sub.3 Cl CH.sub.3 H H H (N) 152.0-153.0 213 H Cl CF.sub.3 H Cl      OCH.sub.3 H H (N) 169.0-171.0        214 H Cl CF.sub.3 H H      ##STR105##       H H (N) --   215 H Cl CF.sub.3 H CHO OCH.sub.3 H H (N) -- 216 H Cl      CF.sub.3 H Br OCH.sub.3 H H (N) 177.0-178.0 217 H Cl CF.sub.3 H H      SO.sub.2 CH.sub.3 H H CCl 142.0-143.0 218 H Cl CF.sub.3 H H SO.sub.3      CH.sub.3 H H (N) 129.0-131.0        219 H Cl CF.sub.3H H      ##STR106##       H H (N) --        220 H Cl CF.sub.3 H H      ##STR107##       H H (N) --   221 H Cl CF.sub.3 H H OCH.sub.2 CN H H (N) 90.0-92.0 222 H      Cl CF.sub.3 H Cl OCH.sub.3 H H CCl -- 223 H Cl CF.sub.3 H Cl OCH.sub.3      Cl H CCl --        224 H H CF.sub.3 H H      ##STR108##       H H CCl --   225 H H CF.sub.3 H H NO.sub.2 H H CCl -- 226 H Cl CF.sub.3      H H OCH(CH.sub.3).sub.2 H H CCl -- 227 H Cl CF.sub.3 H H OCH(CH.sub.3).su      b.2 H H (N) -- 228 H H CF.sub.3 Cl H H H H CCl 73.0-75.0 229 H Cl      CF.sub.3 OCH.sub.3 H H H H CCl 97.0-99.0 230 H Cl CF.sub.3 H H N(C.sub.2      H.sub.5).sub.2 H H CCl 105.0-107.0 231 H Cl CF.sub.3 H N(C.sub.2      H.sub.5).sub.2 H H H CCl 73.0-75.0 232 H Cl CF.sub.3 N(C.sub.2       H.sub.5).sub.2 H H H H CCl -- 233 H Cl CF.sub.3 H Cl NHSO.sub.2      CF.sub.3 H H (N) -- 234 H Cl CF.sub.3 H CHO H H H CCl --   235 H Cl      CF.sub.3 H H       ##STR109##       H H (N) 92.0-99.0        236 H Cl CF.sub.3 H H      ##STR110##       H H CCl 85.0-91.0   237 H H CF.sub.3 H H OCH.sub.3 H H CCl 78.0-82.0      238 H Cl CF.sub.3 H H CH(Br).sub.2H H CCl 98.0-100.0 239 H H CF.sub.3 CN      H H H H CCl 149.0-150.0 240 H Cl CF.sub.3 H I OCH.sub.3 H H CCl 162.0-164      .0 241 H Cl CF.sub.3 H H Cl H H (N) -- 242 H Cl CF.sub.3 H NO.sub.2      CO.sub.2 CH.sub.3 H H CCl -- 243 H Cl CF.sub.3 H F OCH.sub.3 H H CCl      128.0-130.0 244 H Cl CF.sub.3 H CHF.sub.2 H H H CCl 92.0-95.0   245 H H      CF.sub.3 H H       ##STR111##       H H CCl 99.0-101.0        246 H Cl CF.sub.3 H H      ##STR112##       H H (N) --        247 H Cl CF.sub.3 H H      ##STR113##       H H (N) --        248 H Cl CF.sub.3 H H      ##STR114##       H H (N) 161.0-167.0        249 H Cl CF.sub.3 H NO.sub.2      ##STR115##       H H (N) 138.0-139.0        250 H H CF.sub.3 H NO.sub.2      ##STR116##       H H CCl 164.0-165.0   251 H H CF.sub.3 H Cl H H H CCl -- 252 H H      CF.sub.3 H H Cl H H CCl -- 253 H Cl CF.sub.3 H Cl OH H H CCl --   254 H      Cl CF.sub.3 H H       ##STR117##       H H (N) 132.0-135.0        255 H Cl CF.sub.3 H H      ##STR118##       H H (N) 80.0-82.0

HERBICIDAL SCREENING TESTS

The compounds listed in the foregoing table were tested for herbicidal activity as follows: As one skilled in the art is aware, the results obtained in herbicidal screening tests are affected by a number of factors that are not readily controllable. Environmental conditions, such as amount of sunlight and water, soil type, soil pH, temperature and humidity, are examples of such factors. Other factors which can affect test results are the depth of planting and the application rate of the herbicide, as well as the nature of the crops being tested. Results will also vary from crop to crop and within the crop varieties.

PRE-EMERGENCE HERBICIDAL SCREENING TEST

On the day preceding treatment, seeds of several different weed species were planted in sandy loam soil in individual rows using one species per row across the width of a flat. The weeds planted were green foxtail (SETVI) (Setaria viridis), wild oat (AVEFA) (Avena futua), watergrass (ECHCG) (Echinochlea crusgalli), wild mustard (SINAR) (Brassica kaber), velvetleaf (ABUTH) (Abutilon theophrasti), annual morningglory (PHBPU) (Ipomoea purpurea) [or morningglory (IPOSS) (Ipomoca sp.)] and yellow nutsedge (CYPES) (Cyperus esculentus). Ample seeds were planted to give about 20 to 40 seedlings per row, after emergence, depending upon the size of the plants.

Solutions of the test compounds were made by weighing out 400 or 100 milligrams (mg) of the test compound into a 60 mL wide-mouth bottle, then dissolving the compound in 25 mL acetone containing 1% Tween 20® (polyoxyethylene sorbitan monolaurate emulsifier). Additional solvents, not exceeding 5 mL, were used if needed to dissolve the compound. A 20.5 mL aliquot was then taken from the solution and diluted with 25 mL of an acetone:water mixture (19:1) containing 1% Tween 20® to form a sprayable solution.

The flats were placed in a greenhouse at 21°-29.5° C., and watered by sprinkling. One day after planting, the flats were sprayed with the spray solution calibrated to deliver 400 L/ha. The application rate was 4.0 or 1.0 kg/ha.

The flats were then returned to the greenhouse and water daily by sprinkling. The degree of weed control was estimated and recorded 3 weeks after treatment, as percentage control compared to the growth of the same species in an untreated check flat of the same age.

The percent control is the total injury to the plants due to all factors, including inhibited germination, killing of the plant tissue after emergence, stunting, malformation, chlorosis and other types of injury. The control ratings vary from 0 to 100 percent, where 0 represents no effect with growth equal to the untreated control, and 100 represents complete kill; a dash indicates that no test was performed at that level of application.

The results of the pre-emergence test are shown in Tables II and III. The dashed line (- - - ) indicates that the herbicidal activity of a compound was not tested on that particular weed species.

                                      TABLE II                                     __________________________________________________________________________     Pre-emergence Herbicidal Activity                                              Application Rate - 4.0 kg/ha                                                   CMPD.                                                                          No.  SETVI                                                                              AVEFA                                                                               ECHCG                                                                               SINAR                                                                               ABUTH                                                                               PHBPU                                                                               IPOSS                                                                              CYPES                                    __________________________________________________________________________      1   100  0    0    80   50  100  --  0                                         2   100 90   100  100  100  100  --  0                                         3   100  0    50   0    0    0   --  0                                         4    0   0    0    0    0    0   --  0                                         5    0   0    0    0    0    0   --  0                                         6   100 100  100  100  100  100  --  5                                         7   100 100  100  100  100  100  --  40                                        8   100 30    60  100  100  98   --  0                                         9   100 75   100  100  100  100  --  5                                        10    0   0    0    0    0    0   --  0                                        11   100 10    0    0    30   0   --  0                                        12   100 10    25   90   85  80   --  0                                        13    0   0    0    0    0    0   --  0                                        14   100  0    0    0    0    0   --  0                                        15    60 50    50  100  100  100  --  0                                        16    60  0    0    60   30  10   --  0                                        17    90  0    10  100   30  30   --  0                                        18   100 95   100  100  100  100  --  0                                        19   100 10    50   60   75  75   --  0                                        20   100 10   100  100  100  20   --  0                                        21    0   0    0    10   50  10   --  0                                        22    10  0    0    30  100  70   --  0                                        23    50  0    0    0    0    0   --  0                                        24   .    0    0    0    0    0   --  0                                        25    0   0    0    0    0    0   --  0                                        26    10  0    0    0    5    0   --  0                                        27    0   0    0    0    0    0   --  0                                        28   100 10    25   95  100  60   --  5                                        29   100 10    30  100   95  65   --  0                                        30    50  0    0   100   20  30   --  0                                        31    10  0    0    0    0    0   --  0                                        32    10  5    0    10   0    0   --  0                                        33   100 85   100  100  100  95   --  0                                        34   100 80   100  100  100  70   --  5                                        35    15 10   100   80   90  15   --  0                                        36   100 10   100  100  100  95   --  5                                        37   100 15   100  100  100  100  --  5                                        38    10  0    0    20   60   0   --  0                                        40   100 80    85  100  100  100  --  5                                        41   100 100  100  100  100  100  --  95                                       42   100 90   100  100  100  100  --  20                                       43   100 100  100  100  100  --   100 100                                      44   100 70   100  100  100  --   90  20                                       45   100 100  100  100  100  --   100 100                                      46   100 80   100  100  100  --   100 25                                       47   100 80   100  100  100  --   100 5                                        48   100 100  100  100  100  --   100 30                                       49    75  5    10   90   40  --   25  0                                        50   100  5    80   0    0   --    5  0                                        51   100 25    85   0   100  --   30  10                                       52   100 75   100  100  100  --   100 65                                       55   100 100  100  100  100  --   100 100                                      56    0   0    0    0    0   --    0  0                                        59   100 100  100  100  100  --   100 100                                      60    50  5    25   10   80  --    0  0                                        61    30  0    0    30   40  --    5  0                                        62   100 60    85   90   95  --   75  5                                        63   100 70    20  100  100  --   100 0                                        64   100 90   100  100  100  --   100 60                                       65   100 90   100  100  100  --   100 50                                       66   100 85   100  100  100  --   98  0                                        67   100 50   100  100   95  --   90  20                                       73   100 40   100  100  100  --   100 10                                       74   100 40   100  100  100  --   50  0                                        75   100 50   100   0   100  --   50  0                                        76   100 50   100  100  100  --   60  0                                        78   100  0    30   75  100  --   40  0                                        80   100  0    50  100  100  --   85  0                                        81   100 85   100  100  100  --   100 15                                       82    0   0    0    0    0   --    0  0                                        83    0   0    0    0    0   --    0  0                                        85   100 10    5   100  100  --   80  0                                        87   100 15    15  100  100  --   60  0                                        92   100 60   100  100  100  --   95  0                                        93   100 65   100   0    50  --   10  5                                        94   100 90   100  100  100  --   100 5                                        101  100  5    15  100  100  --   30  5                                        102   50 40    15   10  100  --   100 0                                        107   0   0    0    0    0   --    0  0                                        108   0   0    0    0    0   --    0  0                                        109   0   0    0    0    0   --    0  0                                        110  100  5    10   75  100  --   75  5                                        112   0   0    0    0    0   --    0  0                                        113   0   0    0    0    0   --    0  0                                        114   0   0    0    60   20  --    5  5                                        115  100 50    98  100  100  --   75  30                                       116   0   0    0    0    0   --    0  0                                        117  100  5    85   50  100  --   90  5                                        118   0   0    0    25   10  --    5  0                                        122  100  5    95  100  100  --   100 10                                       123  100  5    60   0    80  --   40  0                                        125  100 10    20  100  100  --   85  0                                        126  100 10    5   100  100  --   85  0                                        127   70  0    5   100  100  --   60  0                                        143  100 20   100  100  100  --   70  0                                        144   60  5    30  100   95  --   30  0                                        145   30  5    5    60   50  --   25  0                                        146  100  0    0    0    20  --   60  0                                        147   60  0    15   60   95  --   60  0                                        148   5   0    0    0    0   --    5  0                                        158   0   0    0   100   30  --   30  0                                        159   75 15    0   100  100  --   30  0                                        161   10  0    5    85   40  --    0  0                                        162  100 98   100  100  100  --   100 40                                       163   0   0    0    0    0   --    0  0                                        168  100  0    10   15   30  --    0  0                                        169   5   0    0    5    70  --    0  0                                        170   0   0    0    15   80  --    5  0                                        181  100 20    60  100  100  --   100 0                                        184   10  0    0    60   10  --    0  0                                        204  100 10    60  100  100  --   60  0                                        205  100 80   100  100  100  --   100 5                                        211  100 90   100  100  100  --   100 5                                        212  100 90   100  100  100  --   100 10                                       213  100 95   100   10   98  --   20  5                                        215  100 85   100  100   60  --   25  0                                        216  100 10    15   10   5   --   10  0                                        217  100 50   100  100  100  --   100 75                                       218  100 90   100  100  100  --   100 85                                       223  100  0    0    30   60  --    5  0                                        224  100 100  100  100  100  --   100 85                                       225   0   0    0    0    0   --    0  0                                        228  100 50   100  100  100  --   100 5                                        229  100 10   100  100  100  --   100 15                                       230  100  0    5    10   0   --    0  0                                        231   10  0    0    0    0   --   100 0                                        232   0   0    0    0    0   --    0  0                                        233  100 100  100  100  100  --   100 90                                       234   30  0    5   100  100  --   85  0                                        238  100 40   100  100  100  --   100 0                                        239  100 30    85  100  100  --   90  0                                        240  100 20    60  100  100  --   100 0                                        241  100 60   100   15   30  --   20  0                                        244  100 60   100  100  100  --   95  5                                        251  100 50   100   95  100  --   60  5                                        252  100  5    15   10  100  --    0  0                                        __________________________________________________________________________

                                      TABLE III                                    __________________________________________________________________________     Pre-emergence Herbicidal Activity                                              Application Rate - 1.0 kg/ha                                                   CMPD.                                                                          NO.  SETVI                                                                              AVEFA                                                                               ECHCG                                                                               SINAR                                                                               ABUTH                                                                               PHBPU                                                                               IPOSS                                                                              CYPES                                    __________________________________________________________________________      1   100  0    0    0    0   0    --  0                                         2   100 80   100  100  100  100  --  0                                         3   100  0    30   0    0   0    --  0                                         4    0   0    0    0    0   0    --  0                                         5    0   0    0    0    0   0    --  0                                         59  100 100  100  100  100  --   100 25                                        68  100 50   100  100   85  --    70 15                                        69   95 10    5   100  100  --    95 10                                        70   95 75    70  100  100  --   100 25                                        71   20  0    0   100   75  --    80 0                                         72  100 80    70  100  100  --   100 5                                         77  100 40    20  100  100  --    70 0                                         79  100 40   100  100  100  --   100 60                                        84   80 30    10  100  100  --    75 5                                         86  100 90    15  100  100  --    90 5                                         88   85 40    20  100  100  --    60 5                                         89   30  0    0    30   30  --    0  0                                         90   90  0    0    60   20  --    5  0                                         91  100 75   100  100  100  --   100 5                                         95  100 25   100   70  100  --    20 0                                         96  100 15    70  100  100  --    10 0                                         97  100 60   100  100  100  --   100 10                                        98  100  5    20  100  100  --   100 5                                         99  100 10    40  100  100  --   100 5                                        100   70  5    30   5    40  --    15 0                                        103   20  5    0   100  100  --    65 0                                        104  100 30   100   0    10  --    10 0                                        105   70 25    10  100  100  --   100 0                                        106  100 20    5   100  100  --    65 0                                        111  100 60   100  100  100  --    98 5                                        119  100 95   100  100  100  --   100 5                                        120  100 40   100  100  100  --   100 0                                        121   30  0    0    70   60  --    15 0                                        124  100  5    20  100  100  --   100 0                                        128  100 85   100  100  100  --   100 15                                       129  100 15    85  100  100  --   100 0                                        130   10  0    0    15   50  --    50 0                                        131  100 10    95   15  100  --    80 0                                        132   90 95    80  100  100  --    70 20                                       133  100 95    80  100  100  --   100 25                                       134  100  5    10  100  100  --   100 0                                        135  100 100   90  100  100  --   100 60                                       136  100 25   100  100  100  --   100 0                                        137  100 95   100  100  100  --   100 15                                       138  100  5   100  100  100  --   100 0                                        139  100 100  100  100  100  --   100 30                                       140  100 95   100  100  100  --   100 25                                       141  100 100  100  100  100  --   100 20                                       142  100 75   100  100  100  --   100 5                                        150   10  0    0    20   40  --    5  0                                        151   85  5    5   100  100  --    40 0                                        152  100 10    5   100  100  --    30 0                                        153  100 100  100  100  100  --   100 60                                       154  100 100  100  100  100  --   100 90                                       155  100 25    50  100  100  --    40 0                                        156   60  0    5    98  100  --    40 0                                        157  100 100  100  100  100  --   100 70                                       160  100 85   100   20   85  --    40 10                                       164  100 100  100  100  100  --   100 90                                       165  100 100  100  100  100  --   100 75                                       166  100 100  100  100  100  --   100 80                                       167  100 100  100  100  100  --    85 15                                       171  100 100  100  100  100  --   100 95                                       172   10  0    0    5    10  --    5  0                                        173   5   0    0    10   50  --    10 0                                        174  100 98   100  100  100  --   100 80                                       175   95 20    5   100  100  --   100 0                                        176  100 100  100  100  100  --   100 60                                       177  100 100  100  100  100  --    60 30                                       178  100 100  100  100  100  --   100 80                                       179  100 100  100  100  100  --   100 60                                       180  100 100  100  100  100  --   100 80                                       182  100 80   100  100  100  --    60 0                                        183  100 75   100   98  100  --    40 40                                       185  100 100  100  100  100  --   100 95                                       186  100 50   100  100  100  --    70 10                                       187  100 60    60  100  100  --    40 15                                       188  100 100  100  100  100  --   100 95                                       189  100 100  100  100  100  --   100 98                                       190  100 100  100  100  100  --   100 85                                       191  100 100  100  100  100  --    90 75                                       192  100 100  100  100  100  --   100 75                                       193  100 100  100  100  100  --   100 98                                       194  100 80    98  100  100  --   100 50                                       195  100 85   100  100  100  --   100 40                                       196  100 15    10  100   98  --    10 5                                        197  100 100   25   90  100  --    60 5                                        198   10  0    0    5    30  --    10 0                                        199  100 50    15  100  100  --    5  5                                        200  100 15    5    5   100  --    15 0                                        201  100 80   100  100  100  --    70 50                                       202  100 90   100  100  100  --    80 40                                       203  100 70    95   20  100  --    60 25                                       206  100 100  100  100  100  --   100 75                                       207  100 95   100  100   90  --   100 70                                       208  100 100  100  100  100  --   100 80                                       209  100 90   100  100  100  --    95 70                                       210  100 100  100  100  100  --   100 90                                       214  100 15    60   90  100  --    60 15                                       219  100  5    80   0    60  --    0  0                                        220   0   0    0    0    0   --    0  0                                        221  100 90   100  100  100  --    65 50                                       222  100 20   100  100  100  --    30 0                                        226  100 10    90  100  100  --    50 0                                        227  100 85   100   98  100  --   100 0                                        235  100 95   100  100  100  --   100 15                                       236  100 10   100  100  100  --   100 5                                        237  100 25   100   85  100  --    60 0                                        242  100 70   100  100  100  --    85 5                                        243  100 100  100  100  100  --   100 40                                       245  100 95   100  100  100  --    70 60                                       246  100 100  100  100  100  --   100 95                                       247  100 100  100  100  100  --   100 90                                       248   10  0    5    15   20  --    0  0                                        249  100 70   100  100  100  --    95 10                                       250  100  0    5    70   40  --    10 5                                        255  100 100  100  100  100  --   100 98                                       __________________________________________________________________________

POST-EMERGENCE HERBICIDAL EVALUATION

The soil was prepared and seeded with the same varieties as described for the pre-emergence test. The flats were places in the greenhouse at 21°-29° C. and watered by sprinkling. The seeds of the weed species are planted 10-12 days before treatment. Watering of the treated flats was confined to the soil surface and not to the foliage of the germinated plants.

The results of the post-emergence herbicide tests are reported in Tables IV and V.

                                      TABLE IV                                     __________________________________________________________________________     Post-emergence Herbicidal Activity                                             Application Rate -- 4.0 kg/ha                                                  CMPD.                                                                          NO.  SETVI                                                                              AVEFA                                                                               ECHCG                                                                               SINAR                                                                               ABUTH                                                                               PHBPU                                                                               IPOSS                                                                              CYPES                                    __________________________________________________________________________      1   100 0     0   90   100  100  --  0                                         2   100 80   100  100  100  100  --  5                                         3   100 0    50   50   100  100  --  0                                         4   100 0     0   20    0    0   --  0                                         5   10  0    10   10    0    0   --  0                                         6   100 60   30   100  100  100  --  5                                         7   95  60   100  100  100  100  --  25                                        8   30  0     0   70   100  100  --  0                                         9   100 30   60   40   100  100  --  0                                        10    0  0     0   50    25   0   --  0                                        11   70  10   10   50    80   90  --  0                                        12   80  10   10   100  100  100  --  0                                        13    0  0     0   10    20   10  --  0                                        14    0  0     0   30    40   60  --  0                                        15   10  10   10   20   100   90  --  0                                        16   10  10    0   40   100   80  --  0                                        17   40  10   10   60   100  100  --  0                                        18   100 98   100  100  100  100  --  5                                        19   30  20   20   10    80   60  --  0                                        20   100 20   30   100  100   90  --  0                                        21   10  0     0   100   60  100  --  0                                        22   40  0     0   90    90  100  --  0                                        23   10  0    10   10    20   40  --  0                                        24   30  10   10   10    40   60  --  0                                        25    0  0      0   0    0    10  --  0                                        26   10  5     0   10    10   20  --  0                                        27    0  0     0    0    0    10  --  0                                        28   50  30    5   100  100  100  --  5                                        29   30  10   10   75    90   60  --  0                                        30   10  5    10   20    40  100  --  0                                        31    5  5     0    0    0    0   --  0                                        32    0  0     0   10    0    5   --  0                                        33   85  25   85   80   100  100  --  5                                        34   100 20   95   85   100  100  --  5                                        35   15  0     0    5    95   80  --  0                                        36   100 20   60   100  100  100  --  5                                        37   90  15   85   100  100  100  --  5                                        38   15  10    5   20    70   50  --  0                                        40   80  60   40   100  100  100  --  15                                       41   100 100  100  100  100  100  --  100                                      42   100 25   100  100  100  100  --  20                                       43   100 100  100  100  100  --   100 100                                      44   100 25   100  100  100  --   100 15                                       45   100 100  100  100  100  --   100 100                                      46   100 60   100  100  100  --   100 20                                       47   100 60   100  100  100  --   100 10                                       48   100 100  100  100  100  --   100 40                                       49   20  0    10   80    98  --    95 0                                        50   85  5    70    0    90  --   100 0                                        51   85  10   85    0   100  --   100 5                                        52   100 80   100  100  100  --   100 85                                       55   100 100  100  100  100  --   100 100                                      56    0  0     0    0    0   --    0  0                                        59   100 100  100  100  100  --   100 100                                      60   10  5     5   20    10  --   100 0                                        61   15  10    0   10    20  --    70 0                                        62   85  40   80   80    90  --   100 5                                        63   100 50   40   100  100  --   100 40                                       64   100 80   100  100  100  --   100 65                                       65   100 80   100  100  100  --   100 50                                       66   85  60   85   100  100  --   100 15                                       67   100 5    100  40   100  --   100 5                                        73   100 25   100  100  100  --   100 5                                        74   100 15   100  100  100  --   100 5                                        75   100 5    100   0   100  --   100 0                                        76   100 5    70   60   100  --   100 5                                        78   100 10   25   100  100  --   100 5                                        80   40  15    5   100  100  --   100 5                                        81   80  75   90   100  100  --   100 10                                       82    0  0     0   10    0   --    0  0                                        83    0  0     0    0    0   --    0  0                                        85   20  10   15   100  100  --   100 5                                        87   60  5    10   100  100  --   100 10                                       92   100 50   100  100  100  --   100 5                                        93   100 5    98    0    98  --   100 0                                        94   100 60   100  100  100  --   100 10                                       101  60  5     5   60   100  --   100 0                                        102  85  10   10   100  100  --   100 0                                        107   0  0     0    0    0   --    0  0                                        108   0  0     0    0    0   --    0  0                                        109   0  0     0    0    0   --    0  0                                        110  10  5     5   40    80  --   100 0                                        112   0  0     0    0    0   --    0  --                                       113   0  0     0    0    0   --    0  0                                        114  10  0     0   15    10  --    5  0                                        115  50  20   30   100   90  --    30 20                                       116   0  0     0    0    5   --    5  0                                        117  50  5    10   25   100  --    90 5                                        118  10  0     5   30    15  --    15 0                                        122  75  10   85   15   100  --    20 10                                       123  85  5    10    0   100  --   100 5                                        125  95  5    20   90   100  --   100 5                                        126  75  5    10   25    85  --    75 0                                        127  30  5    10   100  100  --   100 0                                        143  60  5    15   85   100  --   100 5                                        144  10  5     5   60    5   --    60 0                                        145  15  0     0   80    10  --    50 0                                        146  50  10    5    5    95  --   100 0                                        147  70  20   25   98    95  --   100 5                                        148  10  0     0   60    15  --    5  0                                        158  10  0     0   70   100  --    70 0                                        159  40  5     5   100  100  --   100 5                                        161  10  5     5   90    75  --    60 5                                        162  90  100  100  98   100  --   100 40                                       163   0  0     0   10    0   --    5  0                                        168   5  5     0   40    60  --    40 0                                        169  10  0     0    5    30  --    25 0                                        170   0  0     0   10    5   --    5  0                                        181  95  10   25   100  100  --   100 5                                        184  25  5    10   25    5   --    10 0                                        204  60  0     0   50   100  --   100 5                                        205  98  5    60   60   100  --   100 5                                        211      30   80   100  100  --   100 5                                        212      98   100  100  100  --   100 50                                       213      70   70    5   100  --   100 5                                        215  80  80   50   100  100  --   100 5                                        216  50  15   20    5   100  --   100 5                                        217  100 60   100  100  100  --   100 75                                       218  100 75   100  100  100  --   100 80                                       223  15  0     0   40   100  --   100 0                                        224  100 90   100  100  100  --   100 100                                      225  20  0     5    0    30  --    10 0                                        228  100 15   100  100  100  --   100 15                                       229  100 10   100  100  100  --   100 5                                        230  50  5     5   50   100  --   100 5                                        231   5  0     0    5    50  --    50 0                                        232  10  0     0   25    25  --    15 0                                        233  100 95   60   100  100  --   100 100                                      234  10  5     5   100  100  --   100 0                                        238  100 10   90   100  100  --   100 5                                        239  90  10   30   70   100  --   100 0                                        240  80  10   30   30   100  --   100 10                                       241  80  10   25   10   100  --   100 10                                       244  100 25   98   95   100  --   100 20                                       251  100 10   100  25   100  --   100 5                                        252  50  5     5   25   100  --   100 0                                        __________________________________________________________________________

                                      TABLE V                                      __________________________________________________________________________     Post-emergence Herbicidal Activity                                             Application Rate - 1.0 kg/ha                                                   CMPD.                                                                          NO.  SETVI                                                                              AVEFA                                                                               ECHCG                                                                               SINAR                                                                               ABUTH                                                                               PHBPU                                                                               IPOSS                                                                              CYPES                                    __________________________________________________________________________      1   100  0    0    80  100  100  --   0                                        2   100 60   100  100  100  100  --   0                                        3   100  0    0    0    0   0    --   0                                        4   100  0    0    0    0   0    --   0                                        5    0   0    0    0    0   0    --   0                                        59  100 100  100  100  100  --   100 95                                        68  100  5   100  100  100  --   100 30                                        69   80 10   20   100  100  --   100  5                                        70   70 15   40   100  100  --   100 15                                        71   60 10   10   100  100  --   100 10                                        72   40 10   20   100  100  --   100 20                                        77   95 60   95   100  100  --   100 15                                        79  100 20   75   100  100  --   100 40                                        84   10  5    5   100  100  --   100 15                                        86   90 60   90   100  100  --   100 30                                        88   60 60   20   100  100  --   100 20                                        89   25 10   20   100  100  --   100 10                                        90   15 10    5   100  100  --   100  5                                        91  100 70   95   100  100  --   100 30                                        95   85  5   75    15  100  --   100  0                                        96   85 10   30   100  100  --   100  5                                        97  100  0   95    30  100  --   100 15                                        98  100  0   30   100  100  --   100 15                                        99   80 10   10   100   90  --   100 10                                       100   75  5   15    0    70  --   100  5                                       103   80  5   10    85  100  --   100 10                                       104   90  5   20    5   100  --   100 10                                       105   40  5    5    15  100  --   100  5                                       106   60  5    5    90  100  --    85  5                                       111   60 10   30   100  100  --   100  5                                       119  100 50   100  100  100  --   100  5                                       120  100 10   85   100  100  --   100  5                                       121   10  5    5    60  100  --   100  0                                       124   85 10   15   100  100  --   100  5                                       128  100 25   100  100  100  --   100  5                                       129   75 15   75   100  100  --   100  5                                       130   10  0    5    60   50  --    60  0                                       131   90 20   25    30   75  --   100  5                                       132  100 98   100  100  100  --   100 25                                       133   60 80   60   100  100  --   100 65                                       134   50 15   40   100  100  --   100 25                                       135  100 100  100  100  100  --   100 80                                       136   95 50   75   100  100  --   100 10                                       137   30 85   20   100  100  --   100 20                                       138   85 80   30   100  100  --   100 25                                       139   95 50   100  100  100  --   100 35                                       140   60 75   95   100  100  --   100 25                                       141  100 100  100  100  100  --   100 75                                       142  100 10   90   100  100  --   100  5                                       150   10  0    5    60  100  --    85  5                                       151   70  5    5   100  100  --   100 20                                       152  100 10    5   100  100  --   100 15                                       153  100 100  100  100  100  --   100 85                                       154  100 100  100  100  100  --   100 98                                       155  100 50   30   100  100  --   100  5                                       156   60 10   10   100  100  --   100 10                                       157  100 100  100  100  100  --   100 70                                       160  100 15   95    5   100  --   100 10                                       164  100 100  100  100  100  --   100 98                                       165   85 100  30   100  100  --   100 60                                       166  100 100  100  100  100  --   100 80                                       167   98 30   90    80  100  --   100  5                                       171  100 100  100  100  100  --   100 60                                       172   30 10   10   100  100  --   100  5                                       173   10  5    5    90   95  --   100  5                                       174  100 100  100  100  100  --   100 60                                       175   90 25   60   100  100  --   100 10                                       176   95 100  100  100  100  --   100 40                                       177  100 70   50   100  100  --    95 25                                       178  100 100  100  100  100  --   100 30                                       179  100 100  100  100  100  --   100 60                                       180  100 100  100  100  100  --   100 70                                       182   70 10   30    15  100  --    90  0                                       183   95  5   20    70  100  --    98  5                                       185  100 100  100  100  100  --   100 95                                       186   75 20   20   100  100  --   100 20                                       187   85 20   15    70   90  --   100  5                                       188  100 100  100  100  100  --   100 70                                       189  100 100  100  100  100  --   100 75                                       190  100 75   100   90  100  --   100 30                                       191  100 100  100  100  100  --   100 40                                       192  100 100  100  100  100  --   100 40                                       193  100 80   100  100  100  --   100 60                                       194   70 30   70   100  100  --   100 20                                       195   90 30   60    50  100  --   100 15                                       196   60 10   15    90  100  --   100 10                                       197  100 60   60   100  100  --   100  5                                       198   30  5   15   100  100  --   100  5                                       199   30 10   15    85  100  --   100  5                                       200   30  5    5    80  100  --   100  5                                       201  100 80   75   100  100  --   100 50                                       202  100 75   100   95  100  --   100 15                                       203   70 60   70   100  100  --   100  5                                       206   98 100  100  100  100  --   100 30                                       207  100 95   100  100  100  --   100 25                                       208  100 98   85    50   40  --   100 50                                       209  100 85   75    75  100  --   100 85                                       210  100 75   100  100  100  --   100 85                                       214      85   85   100  100  --   100 20                                       219   95 10   40    0   100  --   100 10                                       220   10  0    0    10   30  --    15  0                                       221  100 100  100  100  100  --   100 40                                       222  100 15   100  100  100  --   100  5                                       226  100 15   80   100  100  --   100  0                                       227  100 10   100   5   100  --   100 10                                       235  100 90   100  100  100  --   100 30                                       236  100 15   15   100  100  --   100 10                                       237   90  5    5    5   100  --   100 10                                       242  100 20   70   100  100  --   100 30                                       243  100 100  100  100  100  --   100 60                                       245  100 95   100  100  100  --   100 60                                       246  100 100  100  100  100  --   100 70                                       247  100 98   100  100  100  --   100 75                                       248   10  5    5    20   50  --    50  5                                       249  100 75   100  100  100  --   100 40                                       250   75  5   10   100  100  --   100 10                                       255  100 100  100  100  100  --   100 100                                      __________________________________________________________________________

The compounds of the present invention are useful as herbicides and can be applied in a variety of ways known to those skilled in the art, at various concentrations. In practice, the compounds are applied as formulations containing the various adjuvants and carriers known to or used in the industry for facilitating dispersion. The choice of formulation and mode of application for any given compound may affect its activity, and selection will be made accordingly. The compounds of the invention may thus be formulated as granules, as wettable powders, as emulsifiable concentrates, as powders or dusts, as flowables, as solutions, suspensions or emulsions, or in controlled-release forms such as microcapsules. These formulations may contain as little as about 0.5% to as much as about 95% or more by weight of active ingredient. The optimum amount for any given compound will depend upon the nature of the seeds or plants to be controlled. The rate of application will generally vary from about 0.01 to about 10 pounds per acre, preferably from about 0.02 to about 4 pounds per acre.

Wettable powders are in the form of finely divided particles which disperse readily in water or other liquid carriers. The particles contain the active ingredient retained in a solid matrix. Typical solid matrices include fuller's earth, kaolin clays, silicas and other readily wet organic or inorganic solids. Wettable powders normally contain about 5% to about 95% of the active ingredient plus a small amount of wetting, dispersing, or emulsifying agent.

Emulsifiable concentrates are homogeneous liquid compositions dispersible in water or other liquid, and may consist entirely of the active compound with a liquid or solid emulsifying agent, or may also contain a liquid carrier, such as xylene, heavy aromatic naphthas, isophorone and other non-volatile organic solvents. In use, these concentrates are dispersed in water or other liquid and normally applied as a spray to the area to be treated. The amount of active ingredient may range from about 0.5% to about 95% of the concentrate.

Granular formulations include both extrudates and relatively coarse particles, and are usually applied without dilution to the area in which suppression of vegetation is desired. Typical carriers for granular formulations include sand, fuller's earth, attapulgite clay, bentonite clays, montmorillonite clay, vermiculite, perlite and other organic or inorganic materials which absorb or which can be coated with the active compound. Granular formulations normally contain about 5% to about 25% active ingredients which may include surface-active agents such as heavy aromatic naphthas, kerosene and other petroleum fractions, or vegetable oils; and/or stickers such as dextrins, glue or synthetic resins.

Dusts are free-flowing admixtures of the active ingredient with finely divided solids such as talc, clays, flours and other organic and inorganic solids which act as dispersants and carriers.

Microcapsules are typically droplets or granules of the active material enclosed in an inert porous shell which allows escape of the enclosed material to the surroundings at controlled rates. Encapsulated droplets are typically about 1 to 50 microns in diameter. The enclosed liquid typically constitutes about 50 to 95% of the weight of the capsule, and may include solvent in addition to the active compound. Encapsulated granules are generally porous granules with porous membranes sealing the granule pore openings, retaining the active species in liquid form inside the granule pores. Granules typically range from 1 millimeter to 1 centimeter, preferably 1 to 2 millimeters in diameter. Granules are formed by extrusion, agglomeration or prilling, or are naturally occurring. Examples of such materials are vermiculite, sintered clay, kaolin, attapulgite clay, sawdust and granular carbon. Shell or membrane materials include natural and synthetic rubbers, cellulosic materials, styrene-butadiene copolymers, polyacrylonitriles, polyacrylates, polyesters, polyamides, polyureas, polyurethanes and starch xanthates.

Other useful formulations for herbicidal applications include simple solutions of the active ingredient in a solvent in which it is completely soluble at the desired concentration, such as acetone, alkylated naphthalenes, xylene and other organic solvents. Pressurized sprayers, wherein the active ingredient is dispersed in finely-divided form as a result of vaporization of a low boiling dispersant solvent carrier, such as the Freons, may also be used.

Such formulations may contain in addition to the active compound various carriers or diluents; wetting, dispersing or emulsifying agents' solvents (water, or organic solvents such as aromatic solvents or chlorinated aliphatic solvents); adhesives; thickeners and other substances. Examples of surface active agents are alkyl and alkylaryl sulfonates and sulfates and their salts; polyhydric alcohols; polyethoxylated alcohols; esters and fatty amines. These agents when used normally comprise from 0.1% to 15% by weight of the formulation.

The compounds of the present invention are also useful when combined with other herbicides and/or defoliants, dessicants, growth inhibitors, insecticdes, fungicides, nematocides, and the like. These other materials can comprise from about 5% to about 95% of the active ingredients in the formulations. These combinations frequently provided a higher level of effectiveness in controlling weeds and often provide results unattainable with separate formulations of the individual herbicides. The compositions may contain as well as other pesticides, also fertilizers, all intended for and formulated for use at the same locus.

Examples of other herbicides, defoliants, dessicants and plant growth inhibitors with which the compounds of this invention can be combined are:

Examples of useful complementary herbicides include:

A. Benzo-2,1,3-thiodiazin-4-one-2,2-dioxides such as bentazone;

B. hormone herbicides, particularly the phenoxy alkanoic acids such as MCPA, MCPA-thioethyl, dichlorprop, 2,4,5-T, MCPB, 2,4-D, 2,4-DB, mecoprop, trichlopyr, fluroxypyr, clopyralid, and their derivatives (e.g. salts, esters and amides);

C. 1,3-dimethylpyrazole derivatives such as pyrazoxyfen, pyrazolate and benzofenap;

D. Dinitrophenols and their derivatives (e.g. acetates such as DNOC, dinoterb, dinoseb and its ester, dinoseb acetate;

E. dinitroaniline herbicides such as dinitramine, trifluralin, ethalfluralin, pendimethalin; and oryzalin;

F. arylurea herbicides such as diuron, flumeturon, metoxuron, neburon, isoproturon, chlorotoluron, chloroxuron, linuron, monolinuron, chlorobromuron, daimuron and methabenzthiazuron;

G. phenylcarbamoyloxyphenylcarbamates such as phenmedipham and desmedipham;

H. 2-phenylpyridazin-3-ones such as chloridazon and norflurazon;

I. uracil herbicides such as lenacil, bromacil and terbacil;

J. triazine herbicides such as atrazine, simazine, aziprotryne, cyanazine, prometryn, dimethametryn, simetryne and terbutryn;

K. phosphorothioate herbicides such as piperophos, bensulide and butamifos;

L. thiolcarbamate herbicides such as cycloate, vernolate, molinate, thiobencarb, butylate, EPTC, triallate, diallate, ethyl esprocarb, tiocarbazil, pyridate and dimepiperate;

M. 1,2,4-triazin-5-one herbicides such as metamitron and metribuzin;

N. benzoic acid herbicides such as 2,3,6-TBA, dicamba and chloramben;

O. anilide herbicides such as pretilachlor, butachlor, alachlor, propachlor, propanil, metazachlor, metolachlor, acetochlor and dimethachlor;

P. dihalobenzonitrile herbicides such as dichlobenil, bromoxynil and ioxynil;

Q. haloalkanoic herbicides such as dalapon, TCA and salts thereof;

R. diphenylether herbicides such as lactofen, fluroglycofen or salts or esters thereof, nitrofen, bifenox, acifluorfen and salts and esters thereof, oxyfluorfen and fomesafen; chlornitrofen and chlomethoxyfen;

S. phenoxyphenoxypropionate herbicides such as diclofop and esters thereof such as the methyl ester, fluazifop and esters thereof, haloxyfop and esters thereof, quizalofop and esters thereof and fenoxaprop and esters thereof such as the ethyl ester;

T. cyclohexanedione herbicides such as alloxydim and salts thereof, sethoxydim, cycloxydim, tralkoxydim and clethodim;

U. sulfonyl urea herbicides such as chlorosulfuron, sulfometuron, metsulfuron and esters thereof; benzsulfuron and esters thereof such as the ester thereof methyl, DPX-M6313, chlorimuron and esters such as the ethyl ester thereof, pirimisulfuron and esters such as the methyl ester thereof, DPX-LS300 and pyrazosulfuron;

V. imidazolidinone herbicides such as imazaquin, imazamethabenz, imazapyr and isopropylammonium salts thereof, imazethapyr;

W. arylanilide herbicides such as flamprop and esters thereof, benzoylprop-ethyl, diflufenican;

X. amino acid herbicides such as glyphosate and gluyfosinate and their salts and esters, sulphosate and bilanafos;

Y. organoarsenical herbicides such as MSMA;

Z. herbicidal amide derivative such as napropamide, propyzamide, carbetamide, tebutam, bromobutide, isoxaben, naproanilide, diphenamid and naptalam;

AA. miscellaneous herbicides including ethofumesate, cinmethylin, difenzoquat and salts thereof such as the methyl sulfate salt, clomazone, oxadiazon, bromofenoxim, barban, tridiphane, (in the ratio 3:1) flurochloridone, quinchlorac and mefanacet;

BB. examples of useful contact herbicides include bipyridylium herbicides such as those in which the active entity is paraquat and those in which the active entity is diquat.

These formulations can be applied to the areas where control is desired by conventional methods. Dust and liquid compositions, for example, can be applied by the use of power-dusters, boom and hand sprayers and spray dusters. The formulations can also be applied from airplanes as a dust or a spray or by rope wick applications. To modify or control growth of germinating seeds or emerging seedlings, dust and liquid formulations can be distributed in the soil to a depth of at least one-half inch below the soil surface or applied to the soil surface only, by spraying or sprinkling. The formulations can also be applied by addition to irrigation water. This permits penetration of the formulations into the soil together with the irrigation water. Dust compositions, granular compositions or liquid formulations applied to the surface of the soil can be distributed below the surface of the soil by conventional means such as discing, dragging or mixing operations.

The following are examples of typical formulations.

    ______________________________________                                         5% dust:  5       parts active compound                                                  95      parts talc                                                   2% dust   2       parts active compound                                                  1       part highly dispersed silicic acid                                     97      parts talc                                                   ______________________________________                                    

These dusts are formed by mixing the components then grinding the mixture to the desired particle size.

    ______________________________________                                         5% granules:                                                                            5        parts active compound                                                 0.25     part epichlorohydrin                                                  0.25     part cetyl polyglycol ether                                           3.5      parts polyethylene glycol                                             91       part kaolin (particle size 0.3-0.8 mm)                       ______________________________________                                    

Granules are formed by mixing the active compound with epichlorohydrin and dissolving the mixture in 6 parts of acetone. The polyethylene glycol and cetyl polyglycol ether are then added. The resultant solution is sprayed on the kaolin and the acetone evaporated in vacuo. Wettable powders:

    ______________________________________                                         70%:   70       parts active compound                                                 5        parts sodium dibutylnaphthylsulfonate                                 3        parts naphthalenesulfonic                                                      acid/phenolsulfonic                                                            acid/formaldehyde condensate (3:2:1)                                  10       parts kaolin                                                          12       parts Champagne chalk                                          40%:   40       parts active compound                                                 5        parts sodium lignin sulfonate                                         1        part sodium dibutylnaphthalene sulfonic                                        acid                                                                  54       parts silicic acid                                             25%:   25       parts active compound                                                 4.5      parts calcium lignin sulfate                                          1.9      parts Champagne chalk/hydroxyethyl                                             cellulose (1:1)                                                       1.5      parts sodium dibutylnaphthalene                                                sulfonate                                                             19.5     silicic acid                                                          19.5     parts Champagne chalk                                                 28.1     parts kaolin                                                   25%:   25       parts active compound                                                 2.5      parts isooctylphenoxy-polyethylene-                                            ethanol                                                               1.7      parts Champagne chalk/hydroxyethyl                                             cellulose (1:1)                                                       8.3      parts sodium aluminum silicate                                        16.5     parts kieselguhr                                                      46       parts kaolin                                                   10%:   10       parts active compound                                                 3        parts of a mixture of sodium salts of                                          saturated fatty alcohol sulfates                                      5        parts naphthalenesulfonic acid/                                                formaldehyde condensate                                               82       parts kaolin                                                   ______________________________________                                    

These wettable powders are prepared by intimately mixing the active compounds with the additives in suitable mixers, and grinding the resulting mixture in mills or rollers.

    ______________________________________                                         Emulsifiable concentrate:                                                      25%:   25       parts active compound                                                 2.5      parts epoxidized vegetable oil                                        10       parts of an alkylarylsulfonate/fatty                                           alcohol polyglycol ether mixture                                      5        parts dimethylformamide                                               57.5     parts xylene                                                   50%    50       parts active compound                                                 45       parts kerosene                                                        5        parts emulsifying agent (mixture of long                                       chain estroxylated polyetheis with long                                        chain sulfonate                                                ______________________________________                                     

What is claimed is:
 1. A compound having the formula ##STR119## wherein R¹ is hydrogen or halogen;R² is hydrogen; nitro; halogen; C₁ -C₆ alkyl; cyano; C₁ -C₆ alkylthio; C₁ -C₆ alkylsulfinyl; C₁ -C₆ alkylsulfonyl; C₁ -C₆ alkoxy; acetylamino; or amino; R³ is hydrogen; chloro, fluoro or iodo; halo-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkoxy; cyano; amino or SO_(y) R¹³ and R¹³ is C₁ -C₆ alkyl or halo-C₁ -C₆ -alkyl and y is 0, 1, or 2; R⁴, R⁵ and R⁶ are independently hydrogen; halogen; nitro; hydroxy; cyano; C₁ -C₆ alkyl; C₁ -C₆ alkoxyimino-C₁ -C₆ -alkyl; hydroxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkylsulfonylamino-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkylsulfonylamino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkylcarbonyloxy)_(z) -C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; formyl; C₁ -C₆ -alkylcarbonyl; carboxy or its salt; COO-C₁ -C₆ -alkyl; carboxamido; substituted carboxamido wherein the nitrogen substituents can be selected from hydrogen, C₁ -C₆ -alkyl, C₁ -C₆ -haloalkylsulfonyl, and C₁ -C₆ -alkylsulfonyl; sulfonamido wherein the nitrogen substituents can be selected from hydrogen and C₁ -C₆ -alkyl; (C₁ -C₆ -alkylsulfonyl)_(z) amino; (acetyl)_(z) amino; ##STR120## wherein L, M, P and Q are as described below; YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR121## C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydroxy-C₁ -C₆ -alkyl; phenyl-C₁ -C₆ -alkyl; cyano-C₁ -C₆ -alkyl; acetoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; or C₂ -C₈ -alkynyl; R¹⁰ is C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydrogen; hydroxy; C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; di-C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; phenoxy; phenyl-C₁ -C₆ -alkyl; aralkyl]; C₁ -C₆ -alkoxycarbonyl; hydroxycarboxyl; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkyl; hydroxycarbonyl-C₁ -C₆ alkyl; (C₁ -C₆ -alkyl)_(n) amino; (C₁ -C₆ -alkyl)_(n) hydrazino; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkylamino; hydroxy-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) aminocarbonyl-C₁ -C₆ -alkylamino; hydroxycarbonyl-C₁ -C₆ -alkylamino; C₁ -C₆ -alkylsulfonylamino; phenylsulfonylamino; acetylamino-C₁ -C₆ -alkylamino; N-C₁ -C₆ -alkoxy-N-(C₁ -C₆ -alkyl)_(m) amino; N-hydroxy-N-(alkyl)_(m) amino; cyano-C₁ -C.sub. 6 -alkyl-amino; (C₁ -C₈ -alkenyl)_(n) amino; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; (C₂ -C₈ -alkynyl)_(n) amino; C₂ -C₈ -alkenyloxy; C₂ -C₈ -alkynyloxy; or semicarbazido; R¹¹ is C₁ -C₄ alkylidene; R¹² is hydrogen; C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; C₂ -C₈ -alkenyl or C₁ -C₆ -alkylcarbonyl; M or W is C₁ -C₆ -alkoxy; C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino; hydroxy; hydrogen; C₂ -C₈ -alkenyloxy; (C₂ -C₈ -alkenyl)_(n) amino; C₂ -C₈ -alkynyloxy; or (C₂ -C₈ -alkynyl)_(n) amino; L is oxygen or sulfur; P is phosphorus; m is 0, 1; n is 0, 1, 2; z is 1, 2; R⁷ is hydrogen; halogen; C₁ -C₆ -alkyl; or nitro; R⁸ is hydrogen or halogen; X is nitrogen; or an agriculturally acceptable salt thereof.
 2. A compound according to claim 1 wherein R² is hydrogen, halogen, C₁ -C₆ -alkyl, C₁ -C₆ -alkylthio or C₁ -C₆ -alkoxy; R³ is hydrogen, chloro, fluoro, iodo, SO_(y) R¹³ or halo-C₁ -C₆ -alkyl; R⁴, R⁵ and R⁶ are independently hydrogen, cyano, halogen, C₁ -C₆ -alkyl, nitro, C₁ -C₆ -alkoxy, halo-C₁ -C₆ -alkyl, carboxy or its salt, COO-C₁ -C₆ -alkyl, a substituted carboxamido, carboxamido, sulfonamido, substituted sulfonamido or YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR122## C₁ -C₆ -alkyl, halo-C₁ -C₆ -alkyl, cyano-C₁ -C₆ -alkyl, C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl, C₂ -C₈ -alkenyl, or C₂ -C₈ -alkynyl; R⁷ is hydrogen or halogen and X is nitrogen.
 3. A compound according to claim 1 wherein R⁴, R⁵ and R⁶ are independently hydrogen, halogen, C₁ -C₆ -alkyl or YR⁹ wherein Y is O; and R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR123## C₁ -C₆ -alkyl; halo-C₁ -halo-C₁ -C₆ -alkyl; hydroxy-C₁ -C₆ -alkyl; aralkylphenyl-C₁ -C₆ -alkyl; cyano-C₁ -C₆ -alkyl; acetoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; hydroxy; C₂ -C₈ -alkenyl; or C₂ -C₈ -alkynyl, and R¹¹ is --CH₂ --, --CH(CH₃)-- or --CH₂ CH₂ --.
 4. A compound according to claim 3 wherein R⁴ is hydrogen.
 5. A compound according to claim 3 wherein R⁴ and R⁵ are hydrogen.
 6. A compound according to claim 2 wherein R² is hydrogen or halogen; R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is YR⁹ ; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 7. A compound according to claim 6 wherein R⁶ is O(R¹¹)_(m) COR¹⁰.
 8. A compound according to claim 7 wherein R¹⁰ is hydrogen, C₁ -C₆ -alkoxy; alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; di-C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; C₁ -C₆ -alkoxycarbonyl; (C₁ -C₆ -alkyl)_(n) amino; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkylamino.
 9. A compound according to claim 1 wherein R⁴, R⁵ and R⁶ are independently hydrogen, halogen, C₁ -C₆ -alkyl, cyano, halo-C₁ -C₆ -alkyl or YR⁹ wherein Y is O, NR¹² or S(O)_(n).
 10. A compound according to claim 9 wherein R⁴ is hydrogen, halogen, C₁ -C₆ -alkyl, cyano, halo-C₁ -C₆ -alkyl or C₁ -C₆ -alkoxy; R⁵ is hydrogen and X is N.
 11. A compound according to claim 10 wherein R⁴ is halogen.
 12. A compound according to claim 10 wherein R⁴ is C₁ -C₆ -alkyl.
 13. A compound according to claim 10 wherein R⁴ is cyano.
 14. A compound according to claim 10 wherein R⁴ is halo-C₁ -C₆ -alkyl.
 15. A compound according to claim 10 wherein R⁴ is C₁ -C₆ -alkoxy.
 16. A compound according to claim 11 wherein R⁴ is chloro or fluoro.
 17. A compound according to claim 10 wherein R⁶ is YR⁹ wherein Y is O or NR¹² or an agriculturally acceptable salt thereof.
 18. A compound according to claim 9 wherein R² is hydrogen or halogen; R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen, R⁵ is hydrogen; R⁷ is hydrogen; R⁸ is hydrogen, and X is N.
 19. A compound according to claim 18 wherein R⁶ is YR⁹ and Y is NR¹².
 20. A compound according to claim 1 wherein R¹, R⁴, R⁵, R⁷ and R⁸ are hydrogen; R² is hydrogen; or halogen and R³ is halo-C₁ -C₆ -alkyl.
 21. A compound according to claim 1 wherein R⁴, R⁵ and R⁶ are independently hydrogen or ##STR124##
 22. A compound according to claim 21 wherein R² is hydrogen or halogen; R³ is halo-C₁ -C₆ -alkyl; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 23. A compound according to claim 1 wherein R¹ is hydrogen; R² is halogen; R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen; R⁵ is hydrogen; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 24. A compound according to claim 1 wherein R¹, R⁷ and R⁸ are hydrogen; R² is hydrogen or halogen; R⁴, R⁵ and R⁶ are hydrogen or YR⁹ ; R³ is halo-C₁ -C₆ -alkyl or SO_(y) R¹³ and X is N.
 25. A compound according to claim 4 wherein R³ is CF₃.
 26. A compound according to claim 1 wherein R⁴ is hydrogen, halogen, C₁ -C₆ -alkyl, cyano or C₁ -C₆ -alkoxy.
 27. A compound according to claim 1 wherein R¹, R⁷ and R⁸ are hydrogen; R² is hydrogen or halogen; R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen, methyl, methoxy, chloro, bromo, fluoro, or cyano, and X is N.
 28. A compound according to claim 27 wherein R² is hydrogen or chloro; R³ is CF₃ ; R⁵ is hydrogen; R⁶ is hydrogen and X is N.
 29. A compound according to claim 1 wherein R⁵ is hydrogen, nitro, halogen, cyano, C₁ -C₆ -alkyl, carboxy or its salt, halo-C₁ -C₆ -alkyl, COO-C₁ -C₆ -alkyl, C₁ -C₆ -alkyl substituted sulfonamido, substituted carboxyamido, formyl, phosphonic acid (PO(OH)₂), PO(alkoxy)₂ or YR⁹ in which Y is O or NR¹² ; R⁹ is C₁ -C₆ -alkyl, C₂ -C₈ -alkyenyl, C₂ -C₈ -alkynyl, (R¹¹)_(m) --COR¹⁰ and R¹² is hydrogen or C₁ -C₆ -alkyl.
 30. A compound according to claim 29 wherein R¹ is hydrogen; R² is hydrogen or halogen; R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen; R⁶ is hydrogen, halogen, C₁ -C₆ -alkyl or YR⁹ ; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 31. A compound according to claim 29 wherein R⁵ is hydrogen, nitro, chloro, bromo, fluoro, methyl, cyano, formyl, --CHF₂ and CF₃.
 32. A compound according to claim 31 wherein R¹ is hydrogen; R² is hydrogen or halogen; R³ is haloalkyl; R⁴, R⁷ and R⁸ are hydrogen; R⁶ is YR⁹ ; and X is N.
 33. A compound according to claim 32 wherein R⁶ is OR⁹.
 34. A compound according to claim 1 wherein R¹, R⁴, R⁵, R⁷ and R⁸ are hydrogen; R² is hydrogen or halogen; R³ is CF₃ ; X is N and R⁶ is OR⁹.
 35. A compound according to claim 34 wherein R⁹ is ##STR125## C₁ -C₆ -alkyl or C₁ -C₆ alkoxy-C₁ -C₆ -alkyl.
 36. A compound according to claim 35 wherein R¹¹ is --CH₂ --, --CH₂ CH₂ -- and --CH(CH₃)-- and m is
 1. 37. A compound according to claim 35 wherein R¹⁰ is OCH₃, NHNH₂, NHOCH₃, NHN═C(CH₃)₂, ##STR126## NHCH₂ CNH₂ OC₂ H₅, OCH₂ CH₂ OCH₃, OCH₃, CH₂ CH₂ CH₃, OH, NH₂, OCH₂ CH₂ CH₃, ONH₂ CH(CH₃)₂, OC₄ H₉ n, OC₅ H₁₁ n, OC(CH₃)₃ ##STR127## or an agriculturally acceptable salt thereof.
 38. A compound according to claim 37 wherein the agriculturally acceptable salts include ammonium, potassium, sodium, nitrate, sulfate and hydrochloride.
 39. A compound according to claim 34 wherein R⁶ is ##STR128## and X is N.
 40. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is chloro; R⁵ is hydrogen; R⁶ is hydrogen; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 41. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is OCH₃ ; R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 42. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR129## R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 43. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR130## R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 44. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR131## R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 45. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR132## R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 46. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR133## and X is N.
 47. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR134## and X is N.
 48. A compound according to claim 1 wherein R¹ is hydrogen; R² is chloro; R³ is CF₃ ; R⁴ is hydrogen; R⁵ is hydrogen; R⁶ is ##STR135## R⁷ is hydrogen; R⁸ is hydrogen and X is N.
 49. A herbicidal composition of matter comprisinga) A herbicidally effective amount of a compound of the formula ##STR136## wherein R¹ is hydrogen or halogen; R² is hydrogen; nitro; halogen; C₁ -C₆ alkyl; cyano; C₁ -C₆ alkylthio; C₁ -C₆ alkylsulfinyl; C₁ -C₆ alkylsulfonyl; C₁ -C₆ alkoxy; acetylamino; or amino; R³ is hydrogen; halogen; halo-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkoxy; cyano; amino or SO_(y) R¹³ and R¹³ is C₁ -C₆ alkyl or halo-C₁ -C₆ -alkyl and y is 0, 1, or 2; R⁴, R⁵ is R⁶ are independently hydrogen; halogen; nitro; hydroxy; cyano; C₁ -C₆ alkyl; C₁ -C₆ alkoxyimino-C₁ -C₆ -alkyl; hydroxy C₁ -C₆ alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ alkysulfonylamino-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkylsulfonylamino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkylcarbonyloxy)_(z) -C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; formyl; C₁ -C₆ -alkylcarbonyl; carboxy or its salt; COO-C₁ -C₆ -alkyl; carboxamido; substituted carboxamido wherein the nitrogen substituents can be selected from hydrogen, C₁ -C₆ -alkyl, C₁ -C₆ -haloalkylsulfonyl, and C₁ -C₆ -alkylsulfonyl; sulfonamido wherein the nitrogen substituents can be selected from hydrogen and C₁ -C₆ -alkyl; (C₁ -C₆ -alkylsulfonyl)_(z) amino; (acetyl)_(z) amino; ##STR137## wherein L, M, P and Q are as described below; YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR138## C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydroxy-C₁ -C₆ -alkyl; aralkyl; phenyl-C₁ -C₆ -alkyl cyano-C₁ -C₆ -alkyl; acetoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; or C₂ -C₈ -alkynyl; R¹⁰ is C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydrogen; hydroxy; C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; di-C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; phenoxy; phenyl-C₁ -C₆ -alkyl aryloxy; aralkyl; C₁ -C₆ alkoxycarbonyl; hydroxycarboxyl; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkyl; hydroxycarbonyl-C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino; (C₁ -C₆ -alkyl)_(n) hydrazino; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkylamino; hydroxy-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) aminocarbonyl-C₁ -C₆ -alkylamino; hydroxycarbonyl-C₁ -C₆ -alkylamino; C₁ -C₆ -alkylsulfonylamino; phenyl sulfonyl omino arylsulfonylamino; acetylamino-C₁ -C₆ -alkylamino; N-C₁ -C₆ -alkoxy-N-(C₁ -C₆ -alkyl)_(m) amino; N-hydroxy-N-(alkyl)_(m) amino; cyano-C₁ -C₆ -alkylamino; (C₁ -C₈ -alkenyl)_(n) amino; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; (C₂ -C₈ -alkynyl)_(n) amino; C₂ -C₈ -alkenyloxy; C₂ -C₈ -alkynyloxy; or semicarbazido; R¹¹ is alkylene; C₁ -C₄ alkylidene R¹² is hydrogen; C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; C₂ -C₈ -alkynyl or C₁ -C₆ -alkylcarbonyl; M or Q is C₁ -C₆ -alkoxy; C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino; hydroxy, hydrogen; C₂ -C₈ -alkenyloxy; (C₂ -C₈ -alkenyl)_(n) amino; C₂ -C₈ -alkynyloxy; or (C₂ -C₈ -alkynyl)_(n) amino; L is oxygen or sulfur; P is phosphorus; m is 0, 1; n is 0, 1, 2; z is 1, 2; R⁷ is hydrogen; halogen; C₁ -C₆ -alkyl; or nitro; R⁸ is hydrogen or halogen; X is nitrogen; or an agriculturally acceptable salt thereof; and; b) A diluent or carrier suitable for use with herbicides.
 50. A method of controlling undesirable vegetation comprising applying to such vegetation or the locus thereof, a herbicidally effective amount of a compound of the formula: ##STR139## wherein R¹ is hydrogen or halogen;R² is hydrogen; nitro; halogen; C₁ -C₆ alkyl; cyano; C₁ -C₆ alkylthio; C₁ -C₆ alkylsulfinyl; C₁ -C₆ alkysulfonyl; C₁ -C₆ alkoxy; acetylamino; or amino; R³ is hydrogen; halogen; halo-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkoxy; cyano; amino or SO_(y) R¹³ and R¹³ is C₁ -C₆ alkyl or halo-C₁ -C₆ -alkyl and y is 0, 1, or 2; R⁴, R⁵ and R⁶ are independently hydrogen; halogen; nitro; hydroxy; cyano; C₁ -C₆ alkyl; C₁ -C₆ alkoxyimino-C₁ -C₆ -alkyl; hydroxy C₁ -C₆ alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ alkylsulfonylamino-C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkylsulfonylamino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkyl; (C₁ -C₆ -alkylcarbonyloxy)_(z) -C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; formyl; C₁ -C₆ -alkylcarbonyl; carboxy or its salt; COO-C₁ -C₆ -alkyl; carboxamido; substituted carboxamido wherein the nitrogen substituents can be selected from hydrogen; C₁ -C₆ -alkyl, C₁ -C₆ -haloalkylsulfonyl, and C₁ -C₆ -alkylsulfonyl; sulfonamido wherein the nitrogen substituents can be selected from hydrogen and C₁ -C₆ -alkyl; (C₁ -C₆ -alkylsulfonyl)_(z) amino; (acetyl)_(z) amino; ##STR140## wherein L, M, P and Q are as described below; YR⁹ wherein Y is O, NR¹², or S(O)_(n) ; R⁹ is --(R¹¹)_(m) --COR¹⁰ ; --(R¹¹)_(m) --SO₂ R¹⁰ ; ##STR141## C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydroxy-C₁ -C₆ -alkyl; aralkyl; phenyl-C₁ -C₆ -alkyl cyano-C₁ -C₆ -alkyl; acetoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; or C₂ -C₈ -alkynyl; R¹⁰ is C₁ -C₆ -alkyl; halo-C₁ -C₆ -alkyl; hydrogen; hydroxy; C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkyl; C₁ -C₆ -alkoxy-C₁ -C₆ -alkoxy; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; di-C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; phenoxy; phenyl-C₁ -C₆ -alkyl; C₁ -C₆ alkoxycarbonyl; hydroxycarboxyl; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkyl; hydroxycarbonyl-C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino; (C₁ -C₆ -alkyl)_(n) hydrazino; C₁ -C₆ -alkoxycarbonyl-C₁ -C₆ -alkylamino; hydroxy-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) amino-C₁ -C₆ -alkylamino; (C₁ -C₆ -alkyl)_(n) -aminocarbonyl-C₁ -C₆ -alkylamino; hydroxycarbonyl-C₁ -C₆ -alkylamino; C₁ -C₆ -alkysulfonylamino; phenyl sulfonyl omino arylsulfonylamino; acetylamino-C₁ -C₆ -alkylamino; N-C₁ -C₆ -alkoxy-N-(C₁ -C₆ -alkyl)_(m) amino; N-hydroxy-N-(alkyl)_(m) amino; cyano-C₁ -C₆ -alkylamino; (C₁ -C₈ -alkenyl)_(n) amino; C₁ -C₆ -alkoxy-C₁ -C₆ -alkylamino; (C₂ -C₈ -alkynyl)_(n) amino; C₂ -C₈ -alkenyloxy; C₂ -C₈ -alkynyloxy; or semicarbazido; R¹¹ is alkylene; C₁ -C₄ alkylidene R¹² is hydrogen; C₁ -C₆ -alkyl; C₂ -C₈ -alkenyl; C₂ -C₈ -alkynyl or C₁ -C₆ -alkylcarbonyl; M or Q is C₁ -C₆ -alkoxy; C₁ -C₆ -alkyl; (C₁ -C₆ -alkyl)_(n) amino; hydroxy; hydrogen; C₂ -C₈ -alkenyloxy; (C₂ -C₈ -alkenyl)_(n) amino; C₂ -C₈ -alkynyloxy; or (C₂ -C₈ -alkynyl)_(n) amino; L is oxygen or sulfur; P is phosphorus; m is 0, 1; n is 0, 1, 2; z is 1, 2; R⁷ is hydrogen; halogen; C₁ -C₆ -alkyl; or nitro; R⁸ is hydrogen or halogen; X is nitrogen; or an agriculturally acceptable salt thereof.
 51. A method according to claim 50 wherein R¹ is hydrogen; R² is hydrogen or halogen; R³ is hydrogen, halogen, SO_(y) R¹³, or halo-C₁ -C₆ -alkyl; R⁴, R⁵ and R⁶ are independently hydrogen, halogen, C₁ -C₆ -alkyl, cyano, halo-C₁ -C₆ -alkyl or YR⁹ ; R⁷ is hydrogen, X is N.
 52. A method according to claim 50 wherein R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen, C₁ -C₆ -alkyl, cyano, halo-C₁ -C₆ -alkyl or C₁ -C₆ -alkoxy; R⁵ is hydrogen; R⁶ is YR⁹ wherein Y is O or NR¹² and X is N.
 53. A method according to claim 50 wherein R³ is halo-C₁ -C₆ -alkyl; R⁴ is hydrogen; R⁵ is hydrogen, halogen, C₁ -C₆ -alkyl, cyano, halo-C₁ -C₆ -alkyl or C₁ -C₆ -alkoxy; R⁶ is YR⁹ wherein Y is O and NR¹³ and X is N. 